By Matt ZapotoskyThe Washington Post-ABC News poll shows Republicans’ approval rating among registered voters is at an all-time low.

But when it comes to who they’re supporting, it’s not a good sign.

The Washington Examiner/Kaiser Family Foundation poll, conducted Aug. 30 to Sept. 2 among 1,000 adults nationwide, found that only 42 percent of GOP voters approve of Trump’s job performance.

Forty-two percent disapprove, and just 21 percent are undecided.

Just 13 percent of Republicans said they would vote for Trump in the November election, while 57 percent said they’d vote for someone else.

The poll found that just 28 percent of registered voters who said they planned to vote said they could be certain they’d support Trump.

Trump won the presidency by only 2.3 percentage points in the first two presidential elections, while Democrat Barack Obama carried the state by 10 points in 2008.

Only 39 percent of Republican voters said they approve of the job Trump is doing as president.

Fifty-seven percent said the same about his Republican congressional allies, but that number has risen to 70 percent for House Speaker Paul Ryan.

Trump’s approval rating has also increased since the election, when only 31 percent approved of his job performance and 43 percent disapproved.

Trump has faced a number of controversies in recent weeks, including the arrest of his former national security adviser Michael Flynn and allegations that his campaign colluded with Russia to influence the 2016 election.

On Tuesday, the White House released a list of Trump associates who had been charged with federal crimes in connection with the investigation.