Most Republican voters believe Donald Trump Jr.'s meeting with Russians in Manhattan, New York, last June was appropriate, according to a Morning Consult/Politico poll released Wednesday.

The July 13-15 survey found 44 percent of conservatives called the June 9, 2016, encounter between Trump campaign associates and a Russian lobbyist and lawyer "appropriate." About one-quarter of Republicans said it was "inappropriate."

The majority of GOP voters defended the meeting as something most campaigns would have done. Only 22 percent said others would not have agreed to meet about possible opposition research on an opponent.

The special counsel investigation into potential collusion between President Trump's campaign and Russia is unlikely to sway conservatives' support for Trump. Only 8 percent said they would support Trump's impeachment if Robert Mueller's team finds Trump coordinated with Russia to rig the election.

Trump's approval numbers were the highest in the Morning Consult poll compared to other surveys for July. Forty-four percent of voters approve of the president's job, while 51 percent disapprove.

The online poll was conducted with 1,994 registered voters and had a 2 percentage point margin of error.