Nearly 3 out of 4 Republicans believe the FBI and Justice Department are trying to undermine U.S. President Donald Trump, according to a Reuters/Ipsos poll released on Monday, a sharp turn for a party that has historically backed law enforcement agencies.

Overall, most of the public still believes that Trump or someone from his campaign worked with Russia to influence the 2016 U.S. presidential election, allegations that Moscow and Trump have repeatedly denied.

The Feb. 3-5 poll found that Americans were sharply divided along party lines over an effort by Trump and his Republican allies to discredit a federal investigation into potential ties between his 2016 campaign and Russia.