Rep. Kevin Cramer Kevin John CramerMomentum growing among Republicans for Supreme Court vote before Election Day On Paycheck Protection Program, streamlined forgiveness is key McConnell shores up GOP support for coronavirus package MORE (R-N.D.) on Wednesday likened voting against President Trump Donald John TrumpBubba Wallace to be driver of Michael Jordan, Denny Hamlin NASCAR team Graham: GOP will confirm Trump's Supreme Court nominee before the election Southwest Airlines, unions call for six-month extension of government aid MORE’s agenda to cheating on one’s significant other.

Cramer, who is running against Sen. Heidi Heitkamp Mary (Heidi) Kathryn HeitkampCentrists, progressives rally around Harris pick for VP 70 former senators propose bipartisan caucus for incumbents Susan Collins set to play pivotal role in impeachment drama MORE (D-N.D.) in this year’s midterm election, attacked the Democratic senator during a radio appearance, CNN reported.

"Here's the good news about Donald Trump: Most of the time, he's for North Dakota, and that's my point where I've heard [Heitkamp] say, 'Gee, I voted with him 55 percent of the time,' " Cramer told conservative host Scott Hennen.

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"Can you imagine going home and telling your wife, 'I've been faithful to you 55 percent of the time?' Are you kidding me? Being wrong half the time is not a good answer," he continued.

Cramer is expected to face a GOP primary challenge in his effort to unseat Heitkamp.

The Cook Political Report, a nonpartisan election analysis, rates the North Dakota Senate race as a toss-up.

Trump won the state by nearly 36 percentage points in 2016.