Here's how President Trump is getting back at a Democrat senator over his VA nomination

President Donald Trump praised Republican Matt Rosendale and attacked Senator Jon Tester (D-Mont.) at a rally Thursday that many see as revenge for the Democrat ending a nomination by the president.

Here's what happened

Trump's raucous rally in Great Falls, Montana, gave a boost to the Rosendale campaign against the incumbency of the Democrat.

"This is a really good man, this is a man that loves the people of Montana," Trump said, "loves the people of this country."

"It's time to retire liberal Democrat Jon Tester!" he said to great applause.

"And you're going to get on your side a real Montana fighter, you see it, you've been watching for the last six months, he's a tough cookie, he's a fighter. He's gonna fight for you - Matt Rosendale."

Trump accused Tester of saying one thing in Montana and doing the other in Washington D.C., and criticized him for voting against ending Obamacare and the GOP tax cut.

"Jon Tester voted no on legislation to stop late-term abortions," Trump said to loud booing. "You wouldn't think it would play very well out here. How did he get elected? I mean I know a lot of people from Montana, you have to explain that one to me - how did he get elected?"

"Allright, you can right your wrong in November, OK?" Trump told the applauding audience. "You can write your wrong. Matt Rosendale."

"Not fair, Tester!"

Tester was pivotal in the failed nomination of Ronny Jackson by the president to head the Department of Veterans Affairs. The senator released information that severely damaged the reputation of Jackson as he was being considered for the job.

Trump slammed Tester on his social media account over the affair.

How did Jon Tester respond to the rally?

Tester's campaign published a full-page ad ahead of Trump's visit thanking the president for signing 16 bills that Tester sponsored or co-sponsored.

Tester told KPAX-TV he didn't watch the rally but was glad that the president had visited the state. He indicated that he opted instead to tend to his pea crops.

TheBlaze reached out to the Tester campaign for a comment, but their reply was not responsive to our query.

Here's the video of Trump attacking Tester: