Most Influential Democratic President since 1900 other than FDR

[OSR stands with Israel]

I would go with either LBJ or Wilson here but went with LBJ

[Alben Barkley]

LBJ for domestic policy, Truman or maybe Wilson for foreign policy. Both are also strong runners-up for domestic policy.

Still, LBJ overall.

Of course, it's JFK or Obama for influence on the public consciousness.

[Mr. Smith]

Truman or LBJ.

[Snowstalker Mk. II]

Obviously Wilson. Come on now.

[SWE]

Including Wilson as an option makes this just as boring as if FDR was included, although there is a decent case for Truman being up there

[They not like us]

LBJ's presidency might be the linchpin of modern American history

[LBJer]

Clearly LBJ, though the U.S.'s Cold War template was laid under Truman. 

[dw93]

From most to least (not including Biden):

1. Truman
2. Wilson
3. Johnson
4. Clinton
5. Obama
6. Carter
7. Kennedy

[quesaisje]

Wilson. And I say this as someone who doesn't hate him. Few people, other than FDR himself, deserve as much credit for building a federal government strong enough to protect us from fascism, communism, and the other totalitarianisms of the twentieth century.

LBJ would be next, but even if you give him full credit for initiatives that started under Kennedy, it's not close.

0. FDR

1. Wilson

2. LBJ
3. Truman

4. JFK
5. Obama
6. Carter

7. Clinton

While it's way too early to put Biden on the board: I don't think he will be judged kindly if his term goes down in history as an awkward interregnum to whatever Trump is doing to this country. But that's not foreordained, just one worst case scenario.

[All Along The Watchtower]

Truman on account of the ending of WWII and dropping The Bomb, the outbreak of the Cold War and the Second Red Scare, the Marshall Plan, NATO, supporting the new State of Israel, and civil rights (big contrast with Wilson on that last one!).

The world of Woodrow Wilson's Presidency looks rather less familiar to us than the world of Harry Truman's, even granting that Wilson was obviously influential in the long term. Though as early as 1920 when he was still in office (!), not too many people claimed Wilson's legacy, and that number has only decreased in recent decades.

JFK was quite influential in terms of Boomer nostalgia, being the first Television President, defusing the Cuban Missile Crisis ^{that he had helped provoke,} and obviously, conspiracy theories. LBJ's domestic policy (much of which was inherited from JFK, to be fair) was less ambitious than Truman's with the very important exception of civil rights/voting rights, but the Democratic Party had officially committed itself to civil rights or black Americans in 1948, and Truman desegregating the armed forces was a significant early step. And re: Vietnam, LBJ's calculations and fears were very much downstream of Truman "losing China" and the backlash he had faced from that.

Carter as President was not as influential as he has been as an ex-President, and we're still too close to Clinton's and certainly Obama's Presidencies to have a remotely sufficient assessment of their influence compared to their (Democratic) predecessors; honestly, I wouldn't be too surprised if Biden turns out to be more influential than either.

[Senator Incitatus]

Very clearly Wilson.