GREAT FALLS, Mont. — In a campaign stop Thursday that was both political and personal, President Trump repeated slams against key Democrats, including Senator Elizabeth Warren, Democrat of Massachusetts, calling her ‘‘Pocahontas’’ to ridicule her claims of Native American ancestry.

Trump said Thursday that he would give her a DNA test kit in the middle of a debate and say: ‘‘I'll give you a million dollars for your favorite charity, paid for by Trump, if you take the test and it shows you’re an Indian.’’

‘‘We will take that little kit, but we have to do it gently because we’re in the #MeToo generation, so we have to be very gentle, and we will very gently take that kit and we will slowly toss it,’’ he said.

Trump targeted Democrat Jon Tester in a bid to get more Republicans elected to the Senate but also to punish the lawmaker he blames for derailing his nominee to lead the Department of Veterans Affairs.

Appearing in a state he dominated in 2016, Trump cast Tester as a ‘‘liberal Democrat,’’ railing against his voting record.

Tester tried to counter Trump’s visit by taking out a full-page ad Thursday in more than a dozen newspapers across the state thanking him for signing 16 bills the Democrat sponsored or co-sponsored.

associated press