Wow, only 56% of independents believe the election was legitimate. Perhaps those are just MAGA independents who think it was illegitimate, but perhaps Trump was able to sow doubt in the electoral system across partisan or ideological lines to some extent.
I have a feeling indpendents - at least white independents - are really anti-incumbent for some reason. Biden's lagging approval numbers are mostly driven down by them. Trump also started tanking immediately after he took office. I could see the same happen again with the next Republican president. Obama lost Independents in 2012 as well.
