Aaron Blake for WaPo:

Sidney Powell has tacitly conceded that she didn’t have the proof of a stolen election that she claimed. Former Trump campaign legal adviser Jenna Ellis has now explicitly acknowledged that.

And it turns out the GOP base as a whole is increasingly admitting it to themselves — that its continued belief in a stolen election is largely just about vibes.

A new CNN poll shows the false belief that President Biden’s 2020 win over Donald Trump was illegitimate remains strong among Republicans and GOP-leaning voters; 63 percent continue to say that, while 37 percent acknowledge Biden’s legitimate victory.

But as this question has been asked over time, something notable has happened: These voters have increasingly acknowledged there is no “solid evidence” for their belief.

Shortly after such beliefs led to the Jan. 6, 2021 insurrection, 71 percent of Republican-leaning voters told CNN’s pollsters that Biden’s win was illegitimate — slightly higher than today.

But at the time, three-quarters of them also said they believed there was “solid evidence” for that. Today, only about half say so, while fully 48 percent of 2020 election deniers acknowledge their belief in a stolen election is “suspicion only.”

All told, back in January 2021, a majority of Republican-leaning voters (54 percent) said they believed that the election was stolen and that there was solid evidence. Today, that’s fallen to just 33 percent.