List of Alternate Presidents 2.0.

[Former President tack50]

Presidents of a presidential Spain with term limits

1979: Temporary president Adolfo Suárez / Fmr. General Manuel Gutierrez Mellado *1
1983: Sen. Felipe González / Rep. Alfonso Guerra
1987: Pres. Felipe González / VP Alfonso Guerra
1991: Minister of defense Narcís Serra / Governor Juan Carlos Rodriguez Ibarra *2
1995: Fmr. governor Jose María Aznar / Rep. Francisco Álvarez Cascos
1999: Pres. Jose María Aznar / VP Francisco Álvarez Cascos
2003: Rep. Jose Luis Rodriguez Zapatero / Gov. Jose Bono
 2007:Pres. Jose Luis Rodriguez Zapatero / VP Carme Chacón *3
2011: Sen. Mariano Rajoy / Gov. Esperanza Aguirre *4
2015: MEP Pablo Iglesias / Rep. Eduardo Madina *5

*1: Suárez resigns in 1981, Gutierrez Mellado refuses to become president, Congress president Landelino Lavilla is elected as president and picks minister for the economy Leopoldo Calvo-Sotelo as his VP.

*2: Narcís Serra resigns in summer of 1995 after a spionage scandal is discovered. Rodriguez Ibarra decides to not appoint anyone as VP.

*3: Jose Bono resigns as VP in 2006 as protest for Zapatero's policy regarding ETA. Is replaced by Rep. Carme Chacón

*4: Esperanza Aguirre resigns as VP because of illness in 2012. Is replaced by Gov. María Dolores de Cospedal

*5: Pablo Iglesias is impeached in 2018 because of Catalonia. Pres. Eduardo Madina picks Gov. Javier Fernández as VP.

Defeated tickets

1979: Felipe González / Enrique Múgica
1983: Sen. Manuel Fraga / Rep. Óscar Alzaga
1987: Andalucia minority leader Antonio Hernández Mancha / Alberto Ruiz Gallardón // Fmr. Pres. Adolfo Suárez / Fmr. Minister of defense Agustín Rodríguez Sahagún. Suarez as an independent actually comes in 2nd.
1991: Gov. Jose María Aznar /  Rep. Rodrigo Rato.
1995: Sen. Julio Anguita / Rep. Francisco Frutos
1999: Sen. Josep Borrell / Rep. Francisco Frutos
2003: Sen. Mariano Rajoy / Fmr. minister of the interior Jaime Mayor Oreja
2007: Fmr. minister of the economy Rodrigo Rato / Fmr. Gov. Alberto Ruiz Gallardón
2011: VP Carme Chacón / Gov. Jose Manuel Griñán // Fmr. MEP Rosa Díez // Philosopher Fernándo Savater Chacón comes 2nd.
2015: Pres. Mariano Rajoy / VP María Dolores de Cospedal

Frontrunners in each party for the 2019 election:

Socialists: Pres. Eduardo Madina. Facing a challenge from Fmr. Pres. Pablo Iglesias.  
Liberal-Conservatives: Catalonia minority leader Albert Rivera (already a candidate in 2015), Fmr. VP María Dolores de Cospedal, Sen. Soraya Sáenz de Santamaría.

Polls currently show a lead for Rivera for the Lib-Cons and Madina ahead by 5 for the Socialists. General election polls show a landslide for the Lib-Cons no matter the candidate, but Rivera is the strongest.

[Former President tack50]

Similar concept to the one I did for Spain, but for the EU. Copy-pasting the US political system into the EU.

President of the European Union

1979:French Pres. Valery Giscard D'Estaing (FR)/ PM. Giulio Andreotti (IT)
1984: Pres. Valery Giscard D'Estaing (FR)/ VP Giulio Andreotti (IT)
1989: PM. Felipe González (ES)/ Sen. Jacques Delors (FR)
1994: Pres. Felipe González (ES) / VP Jacques Delors (FR)
1999: Fmr. PM Silvio Berlusconi (IT) / PM Jose María Aznar (ES)
2004: Chancellor Gerhard Schröder (DE) / Fmr. PM Paavo Lipponen (FI)
2009: PM Jean Claude Juncker (LX) / Fmr. PM Guy Verhofstadt (BE)
2014: PM Robert Fico (SK) / Sen. Martin Schulz (DE)

Defeated

1979: Fmr. PM Willy Brandt (WG) / Fmr. PM Harold Wilson (UK)
1984: Sen. Roy Jenkins (UK) / PM. Andreas Papandreou (GR)
1989: VP Giulio Andreotti (IT) / PM. Jacques Santer (LX)
1994: Fmr. PM Margaret Thatcher (UK) / Fmr. PM Wilfried Martens (BE)
1999: PM. Wim Kok (NL) / Sen Klaus Hänsch (DE)
2004: Pres. Silvio Berlusconi (IT) / VP Jose María Aznar (ES)
2009: Pres. Gerhard Schröder (DE) / VP Paavo Lipponen (FI)
2014: Pres. Jean Claude Juncker (LX) / VP Guy Verhofstadt (BE) // Rep. Nigel Farage (UK) / Rep Geert Wilders (NL)

Results

People's Party
Socialist party

1979: People's Party large victory (by 9)
1984: People's Party close victory (by 2)
1989: Socialist landslide (by 12)
1994: Socialist nailbiter (by 0.5)
1999: Close People's Party victory (by 2)
2004: Socialist close victory (by 3) *
2009: People's Party landslide (by 16)
2014: Socialist landslide (by 10)

*: In reality, conservative parties actaully went up in 2004 even after you adjust for the enlargement, but the Iraq war causes a backlash against the very pro-Iraq Berlusconi government. Plus, they handle the Madrid attacks just as bad as Aznar did in OTL.

[Former President tack50]

George W. Bush dies after choking on a pretzel

43: George W. Bush / Dick Cheney (2001-2002)
44: Dich Cheney / Trent Lott (2002-2005)
45: John Edwards / John Kerry (2005-2009)
46: Mitt Romney / John McCain (2009-2013)
47: Hillary Clinton / Joe Biden (2013-2021)
48: Barack Obama / Sherrod Brown (2021-?)

[Former President tack50]

Presidents of the North American Union

2000: Gov. George W. Bush (Texas) / Gov. Vicente Fox (Guajuanato)
2004: Pres. George W. Bush (Texas) / VP Vicente Fox (Guajuanato)
2008: Sen Barack Obama (Illinois) / Fmr Gov. Andres Manuel López Obrador (Mexico City)
2012: Sen. Stephen Harper (Alberta) / Fmr Gov. Mitt Romney (Massachussets)
2016: Fmr. VP Andres Manuel López Obrador (Mexico City) / Rep. Justin Trudeau (Quebec)

Defeated tickets:

2000: VP Jean Chretien (Quebec) / Sen. Al Gore (Tennessee)
2004: Sen John Kerry (Massachussets) /  Fmr. Gov. Cuauhtémoc Cárdenas (Mexico City)
2008: VP Vicente Fox (Guajuanato) / Sen. John McCain (Arizona)
2012: Pres Barack Obama (Illinois) / VP Andres Manuel López Obrador (Mexico City)
2016: Pres. Stephen Harper (Alberta) / VP Mitt Romney (Massachussets)

[Former President tack50]

The USA decide to annex what would become the EEC/EU after WW2 for some reason

1948: Pres. Harry S. Truman (D-Missouri) / VP Alben W. Barkey (D-Kentucky)
1952: General Dwight D. Eisenhower (R-New York) / Gov. Konrad Adenauer (R-West Germany)
1956: Pres. Dwight D. Eisenhower (R-New York) / VP. Konrad Adenauer (R-West Germany)
1960: VP Konrad Adenauer (R-West Germany) / Sen. Richard Nixon (R-California)
1964: Pres. Konrad Adenauer (R-West Germany) / VP Richard Nixon (R-California)
1968: Sen. Hubert Humpfrey (D-Minnesota) / Rep. Willy Brandt (D-West Germany)
1972: Fmr. VP Richard Nixon (R-California) / Gov. Gaston Eyskens (R-Belgium) ⁽¹⁾
1976: Gov Jimmy Carter (D-Georgia) / Gov. Helmut Schmidt (D-West Germany)
1980: Gov. Margaret Thatcher (R-Great Britain) / Fmr. Gov. Ronald Reagan (R-California)
1984: Pres. Margaret Thatcher (R-Great Britain) / VP Ronald Reagan (R-California)

1988: Sen. Dan Quayle (R-Indiana) / Rep. John Major (R-Great Britain)
1992: Gov. Felipe González (D-Spain) / Gov. Bill Clinton (D-Arkansas) ⁽²⁾
1996: VP Bill Clinton (D-Arkansas) / Sen. Al Gore (D-Tennessee)
2000: Fmr. Gov. Silvio Berlusconi (R-Italy) / Businessman Donald Trump (I-New York)
2004: Pres. Silvio Berlusconi (R-Italy) / VP Donald Trump (I-New York)
2008: Sen. John McCain (R-Arizona) / Gov. Anders Fogh Rasmussen (R-Denmark)
2012: Sen. Joe Biden (D-Delaware) / Gov. Werner Feymann (D-Austria)
2016: Fmr VP Donald Trump (R-New York) / Gov. Viktor Orban (R-Hungary)

Defeated tickets

1948: Gov. Thomas Dewey (R-New York) / Gov. Alcide de Gasperi (R-Italy); Strom Thurmond (I-South Carolina) / Fielding Wright (I-Mississippi)
1952: Gov. Adlai Stevenson (D-Illinois) / Sen. Guy Mollet (D-France)
1956: Gov. Willem Drees (D-Netherlands) / Sen Estes Kefauver (D-Tennessee)
1960: Sen. John Kennedy (D-Massachussets) / Sen. Lyndon Johnson (D-Texas)
1964: Sen. Lyndon Johnson (D-Texas) / Rep. François Mitterand (D-France)
1968: General Charles de Gaulle (R-France) / Gov. Ronald Reagan (R-California)
1972: Pres Hubert Humpfrey (D-Minnesota) / VP Willy Brandt (D-West Germany)
1976: Pres. Gaston Eyskens (R-Belgium) / VP Gerald Ford (R-Michigan)
1980: Pres. Jimmy Carter (D-Georgia) / VP Helmut Schmidt (D-West Germany)
1984: Gov. François Mitterand (D-France) / Sen Walter Mondale (D-Minnesota)
1988: Gov. François Mitterand (D-France) / Gov. Mike Dukakis (D-Massachussets)
1992: Pres. Dan Quayle (R-Indiana) / VP John Major (R-Great Britain)
1996: Fmr. Gov Anibal Cavaco Silva (R-Portugal) / Sen. Bob Dole (R-Kansas)
2000: Pres. Bill Clinton (D-Arkansas) / VP Al Gore (D-Tennessee)
2004: Gov. Tony Blair (D-Great Britain) / Sen. Joe Lieberman (D-Connecticut)
2008: Sen. Barack Obama (D-Illinois) / Gov Jose Luis Rodriguez Zapatero (D-Spain)
2012: Pres. John McCain (R-Arizona) / VP Anders Fogh Rasmussen (R-Denmark)
2016: Pres. Joe Biden (D-Delaware) / VP Werner Feymann (D-Austria)

1: Watergate still happens and Nixon resigns in 1975. Pres. Eyskens nominates Rep. Gerald Ford as VP.

2: Pres. González opts not to run for reelection after corruption accusations from his time as governor come up

[Former President tack50]

US presidents with Canadian parties and named districts:

37: Richard Nixon (Conservative-Pasadena)
38: Gerald Ford (Conservative-Grand Rapids)
39: Jimmy Carter (Liberal-Georgia Albany)
40: Ronald Reagan (Conservative-Irvine)
41: George HW Bush (Conservative-Houston West)
42: Bill Clinton (Liberal-Jonesboro)
43: George W. Bush (Conservative-Lubbock)
44: Barack Obama (NDP-Chicago South Side)
45: Donald Trump (Conservative-Staten Island)

[Former President tack50]

Here is a Spanish one because why not:

ETA successfully assassinates Aznar in 1995

List of Spanish Prime Ministers
1. Adolfo Suárez (1977-1981*) (UCD) (minority)
2. Leopoldo Calvo-Sotelo (1981-1982) (UCD) (minority)
3. Felipe González (1982-1999) (PSOE) (majority 1982-1993; minority 1993-1999)
4. Mariano Rajoy (1999-2010) (PP) (majority 1999-2010)
5. Carme Chacón (2010-2013**) (PSOE) (minority 2010-2013)
6. Patxi López (2013-2014) (PSOE) (minority 2013-2014)
7. Soraya Sáenz de Santamaría (2014-2020) (PP) (minority 2014-2017, majority 2017-2020)
8. Ximo Puig (2020-) (PSOE) (minority 2020-)

*: Resigned
**: Died in office

Basically Aznar dies and is replaced by Francisco Álvarez Cascos as PP leader. However, he fails at positioning himself as moderate enough for the electorate and Felipe González makes a comeback and narrowly wins a 5th consecutive term.

PP replaces Cascos with Rajoy as party leader after the failure, and Rajoy wins a landslide in the 1999 snap election (produced after the Catalans drop support for González) after corruption scandals keep rocking the government.

Rajoy alligns with Jacques Chirac (and later Angela Merkel) over Tony Blair and George Bush, which means Spain does not go into Irak. With a good economy Rajoy cruises to reelection in 2003 and gets a solid minority government 2007. He is opposed by Jose Bono twice (who fails to energize the electorate).

With the recession, while handled better than in real life, Rajoy is still defeated in 2010 by Carme Chacón (who until then was relatively obscure). However her tenure coincides with the peak of the economic recession and stress and the horrible state of the economy takes a huge toll on her. PM Carme Chacón dies of a heart attack in 2013, just as a bailout of Spanish banks is being negotiated and Spain's debt skyrockets.

Chacón is replaced by Patxi López, a cabinet minister. López keeps the general direction, but is defeated by Soraya Sáenz de Santamaría in 2014 relatively easily.

The Santamaría administration is very successful initially and finally takes Spain out of the recession. With a great economy, Santamaría calls a snap election in 2017, where she wins easily. However she handles the Catalonia independence debacle even worse than Rajoy, requiring actual military intervention. With this her approvals drop like a rock, even though the economy is solid. Far right Vox still rises. Santamaría tries to quarantine them, but this even with the good economy this is not enough for her to win reelection, and Ximo Puig wins, propped up by Catalan secessionists and IU.

In this scenario the 2 party system never falls either, though IU and UPyD do rise in popularity in the early 00s (propping up Santamaría's 1st administration). Cs remains a regional Catalan party and Podemos' leaders remain college professors. Coronavirus also doesn't happen (or happens later, early into Puig's term).

[Former President tack50]

Prime ministers of the Franco-British union

1940-1945: Sir Winston Churchill (Conservative)
1945-1951: Clement Atlee (Labour)
1951-1955: Sir Winston Churchill (Conservative)
1955-1957: Anthony Eden (Conservative)
1958-1969: Charles de Gaulle (Conservative)
1969-1974: Edward Heath (Conservative)
1974-1979: François Mitterrand (Labour)
1979-1990: Margaret Thatcher (Conservative)
1990-1997: Jacques Chirac (Conservative)
1997-2005: Tony Blair (Labour)
2005-2015: Nicholas Sarkozy (Conservative)
2015-2017: David Cameron (Conservative)
2017-2019: Theresa May (Conservative)
2019-2019: Marine Le Pen (Conservative)
2019-present: Emmanuel Macron (Liberal Democrats)

Leaders of the opposition of the Franco-British union

1940-1945: Vacant
1945-1951: Sir Winston Churchill (Conservative)
1951-1959: Maurice Thorez (Labour)
1959-1966: Hugh Gaitskell (Labour)
1966-1970: Harold Wilson (Labour)
1970-1974: François Mitterrand (Labour)
1974-1979: Margaret Thatcher (Conservative)
1979-1983: François Mitterrand (Labour)
1983-1992: Neil Kinnock (Labour)
1992-1997: Tony Blair (Labour)
1997-2001: Jacques Chirac (Conservative)
2001-2005: Nicholas Sarkozy (Conservative)
2005-2010: Gordon Brown (Labour)
2010-2017: François Hollande (Labour)
2017-2019: Emmanuel Macron (Liberal Democrats)
2019-present: Nicola Sturgeon (SNP)

Decided to keep the UK election dates since I think such a union would be more influenced by the UK than by France plus the 4th French Republic is crazy even if it was short.

For the end I decided to go a bit creative. In the 2017 election, this backlash and the very bad leadership of François Hollande (who already got a bad result in 2015 but managed to narrowly cling on) and Labour infighting is enough to make the Liberal Democrats come in second thanks to charismatic Emmanouel Macron.

In 2019, this backlash becomes even larger and Macron becomes Prime Minister; helped by Franco-Brexit hardliner Marine Le Pen becoming the Conservative leader. With a moderate anti-Brexiteer against 2 pro-Brexit extremists (Corbyn is Labour leader in this timeline); Macron gets north of 500 seats, with the SNP becoming the official opposition narrowly (a la Canada 1993).

Guess not exactly realistic but whatever, it is kinda hard to combine the 2 with how crazy French and British politics became