Sen. Heidi Heitkamp's (D-N.D.) brother on Thursday praised the senator's decision to oppose Supreme Court nominee Brett Kavanaugh, saying the decision may cost her reelection, but that she needs to "like the person she sees" in the mirror.

"Who knows, she may lose," Joel Heitkamp said on MSNBC, adding that the Kavanaugh vote will be important for voters in North Dakota. "But in the morning, when she's brushing her teeth, she needs to like the person she sees. In my opinion, she’s voting right, that’s the key."

Sen. Heitkamp's brother Joel tells @KatyTurNBC:



"She may lose. But in the morning, when she's brushing her teeth, she needs to like the person she sees." pic.twitter.com/zTKqlhi4yM — MSNBC (@MSNBC) October 4, 2018

Joel Heitkamp made the comments just moments after his sister, 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, announced on a North Dakota radio station that she would vote "no" when the Senate votes on Supreme Court nominee Brett Kavanaugh.

Her announcement came less than a day after the FBI released its finding into sexual misconduct allegations against Kavanaugh. Kavanaugh and Christine Blasey Ford testified last Thursday about Ford's claims that he sexually assaulted her at a high school party in the 1980s.

Kavanaugh has fiercely denied the accusation. He's also denied sexual misconduct allegations from two other women, Deborah Ramirez and Julie Swetnick.

"Our actions right now are a poignant signal to young girls and women across our country. I will continue to stand up for them," Heitkamp, who is running for reelection in state won by President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE in 2016, said.

Heitkamp added that when she "listened to Ford testify, I heard the voices of women I have known throughout my life who have similar stories of sexual assault and abuse."

"Countless North Dakotans and others close to me have since reached out and told me their stories of being raped or sexually assaulted – and expressed the same anguish and fear," she said.

My statement on U.S. Supreme Court nominee Judge Brett Kavanaugh: pic.twitter.com/exZcK78JtF

— Sen. Heidi Heitkamp (@SenatorHeitkamp) October 4, 2018

Heitkamp had said little publicly about her opinions on Kavanaugh this week. She was also one of the Democratic senators to vote in support of Supreme Court Justice Neil Gorsuch in 2017.

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Polls have shown that Heitkamp is trailing in her bid for reelection this November. According to an average of polls tabulated by RealClearPolitics, 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.) has a 8.7-point lead over the current senator.

Other senators viewed as swing votes in Kavanaugh's confirmation, including GOP Sens. Susan Collins (Maine) and Lisa Murkowski (Alaska), have yet to declare their intentions.