From the AJC. Note this is a poll among Republicans:

The poll found that at least 60% of likely Republican voters are at least somewhat confident that the November elections will be conducted fairly and accurately, compared with one-quarter who are “not so confident” and 13% who are not at all confident.

In the AJC’s January poll, more than half of GOP likely voters doubted the integrity of the vote. Just 11% in that survey said they were “very confident” that the November election will be conducted fairly and accurately, while 32% said they were “somewhat confident.”

The two polls capture the shifting views of the GOP electorate ahead of a May 24 runoff dominated by Trump-backed candidates magnifying his election lies — and others who have echoed similar falsehoods.