@apenkop @robertpi I can't see a stretch on the left if you omit the claims of the far right propaganda. Someone like NY's Mamdani is considered a moderate left in most of Europe's democracies.
It is not too far in the past that the people of the US would consider all democratic (the system, not the party) positions as center and deem all positions, that were in favor of denying some people the right to vote, or even human rights as extremist and decidedly un-American.
About far right: To even ask whether US-born are citizens (and even more absurd: native Americans!) was off any chart of being a valid question to US justice before the Trump-era.
There is considerable evidence that the Democratic party has shifted significantly to the left of the median voter on social issues: https://www.ft.com/content/73a1836d-0faa-4c84-b973-554e2ca3a227
And concerning birthright citizenship, the situation also seems to be a bit more complex: https://www.nytimes.com/2026/03/31/us/politics/birthright-citizenship-support.html
If you don't want to use the common workarounds, you can find a recycled version here: https://quantus.substack.com/p/the-leftward-shift-in-the-democratic
There has definitely been a stretch on the left as well, and it's not limited to party activists.
The data is from the GSS, of which the 2024 version has been released in the meantime: https://gss.norc.org/