Pro-Trump protesters

As a Senate showdown looms over the creation of an independent, 9/11-style commission to investigate the Jan. 6 Capitol siege, a new Yahoo News/YouGov poll reveals just how partisan and polarized public perceptions of the attack have become — and how those perceptions are shaping the clash in Congress.

The survey of 1,588 U.S. adults, which was conducted from May 24 to May 26, found that less than half of Republicans (41 percent) say supporters of then-President Donald Trump who gathered on Jan. 6 at the Capitol to rally against the certification of Joe Biden’s Electoral College victory bear “some” or “a great deal” of the blame for the subsequent riot, which left several people dead and more than 140 injured. Less than a quarter (23 percent) blame Trump himself, and most (52 percent) say he is “not at all” to blame.

Yet a full 73 percent of Republicans pin “some” or “a great deal” of responsibility on “left-wing protesters trying to make Trump look bad,” even though both the FBI and Republican House Minority Leader Kevin McCarthy have rejected the falsehood that leftist protesters were involved.