RNA - The nationwide survey shows 83 percent of GOP voters saying they approve of the president’s job performance, marking a 2-point drop from an identical poll conducted August 18-20.
Trump’s overall approval rating remains steady, ticking up 1 percentage point from the previous poll to 47 percent, while 53 percent disapprove.
The president's approval rating rose 3 points among independent voters compared to the previous poll; he now is supported by 46 percent of independents in the poll.
Former South Carolina Gov. Mark Sanford (R) last week became the third Republican to launch a bid to challenge Trump for the GOP's presidential nomination in 2020.
He joins former Massachusetts Gov. Bill Weld (R) and former Rep. Joe Walsh (R-Ill.) in announcing a primary campaign against Trump, who remains widely popular in the party.
Sanford insisted Wednesday that his presidential bid isn’t about hurting Trump’s chances for reelection, but rather about improving the ideas of the Republican Party as a whole.
All three challengers face an uphill battle in seeking to take on Trump. Some states, including South Carolina and Nevada, have moved to cancel their primary elections recently.