Going to do a writeup about the aftermath later but since
https://es.wikipedia.org/wiki/Elecciones_legislativas_de_Argentina_de_2021 of all places has the most up to date numbers we can dig into the popular vote. According to Wikipedia, the results are
JxC: 9 832 813 votes, 41.89% (-5%)
FdT: 7 879 511 votes, 33.03% (-32.1%)
Right /
Libertarian /
Liberal: 1 680 430 votes, 7.22% (+521.5%) (!)
Federal Peronists/Third Way: 1 313 858 votes, 5.65% (-27.9%)
FIT-U: 1 270 540 votes, 5.46%(+66.2%)
Others: 1,288,275, 5.54%
So its fair to say this election was lost rather than won, since
Juntos actually won fewer votes than last time but gained ground anyway because the vote for
Todos completely collapsed. Over 3 million votes left between elections, and that was
after pulling all the stops to regain lost votes from the PASO. They can't even blame vote splitting because the
Federal Peronists collapsed almost as hard as they did. They shouldn't have too much problem getting things through the lower house since most of the independents will be open to negotiation and at least a few (eg. SER Santa Cruz's deputy) are probably going to basically sit with the government but if things don't dramatically turn around they're going to get completely wiped out in two years.
Besides that, Wikipedia's categorization of the parties is okay for the two main parties but needs better context for the remainder to figure out the real order.
The "right wing" parties could be broadly broken into three groups: parties officially affiliated with
Milei and
Espert, parties that
want to be officially affiliated with them, and independent right wing parties.
The first group consists of
LLA,
AL and UCeDe, plus
UNITE (their nominal national vehicle before
RLM jumped ship and which
is already trying to draft Milei for president in 2023),
Partido Libertad, Valores y Cambio from Misiones which is notably the only
Libertarian Party that was able to meet the onerous requirements to run independently without the support of an older party. In total these parties received 1 125 000 votes for right and just under 5%.
The second includes, most notably,
Fuerza Republicana in Tucuman, which has
had a sudden reinvention as a liberal/libertarian force, as well as smaller provincial parties parties
Vamos in Mendoza and the UPF in Córdoba. So the total number of votes for parties that either are affiliated with the two main
liberals or officially want to be would be 1 281 000 for 5.5% of the national popular vote
The largest "independent" right wing force was
Hotton's Valores+, which is kind of debatable because to my understanding she endorsed
Milei but not
Espert so you could
arguably include her in either of the prior groups but I thought not. The next largest is Córdoba's
Encuentro Vecinal Córdoba, and including various smaller right wing parties the total vote for the "independent" right was just under 400 000 (just under 2% nationally) bringing the total right wing vote to 1 680 000 for 7.2% of the vote
The Left's numbers, meanwhile, only include those that are officially a part of
FIT-U, so that can be considered their core vote. Including
independent splitters, most notably
Zamora's AyC would add about 100 000 more votes to increase it to ~1 370 000 (5.9%), and if we're
really generous and toss in "fellow travelers" outside of the two official coalitions then adding in FAP and PS would boost the "broad left" vote by 260 000 votes to 1 630 000 (7%)