Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellFEC flags McConnell campaign over suspected accounting errors Poll: 59 percent think president elected in November should name next Supreme Court justice Mark Kelly: Arizona Senate race winner should be sworn in 'promptly' MORE (R-Ky.) is hailing Saturday’s expected confirmation of Brett Kavanaugh to the Supreme Court as a major boost to Senate Republican candidates in next month’s midterm elections.

McConnell told The Hill he spoke with his top political advisers on Friday, who said the bitter fight over Kavanaugh, and what he has called a “shameless smear campaign” by Democrats, has revved up the GOP base in red states.

“I talked to a couple of my political advisers yesterday and this has been a shot in the arm for us going into the fall election because it underscores the importance of the Senate and our role in personnel, and of course the most important personnel decisions we make are the courts, and particularly the Supreme Court,” McConnell said in an interview Saturday.

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“Our base is on fire,” he said, while predicting that expected votes against Kavanaugh by Democratic Sens. Joe Donnelly Joseph (Joe) Simon DonnellyHarris faces pivotal moment with Supreme Court battle Trump meets with potential Supreme Court pick Amy Coney Barrett at White House Names to watch as Trump picks Ginsburg replacement on Supreme Court MORE (Ind.), Heidi Heitkamp Mary (Heidi) Kathryn HeitkampHarris faces pivotal moment with Supreme Court battle Centrists, progressives rally around Harris pick for VP 70 former senators propose bipartisan caucus for incumbents MORE (N.D.), Claire McCaskill Claire Conner McCaskillMomentum growing among Republicans for Supreme Court vote before Election Day Democratic-linked group runs ads in Kansas GOP Senate primary Trump mocked for low attendance at rally MORE (Mo.) and Jon Tester Jonathan (Jon) TesterDemocrats shoot down talk of expanding Supreme Court Pence seeks to boost Daines in critical Montana Senate race This World Suicide Prevention Day, let's recommit to protecting the lives of our veterans MORE (Mont.) will come back to bite them next month when they are up for reelection in states won by President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE in 2016.

“I’m doubly upbeat after this Supreme Court fight, which has been like a shot of adrenaline in our campaigns,” he said.

“Only one of the red-state Democrats voted in a way that helped them politically and that was [Joe] Manchin,” he said, referring to the West Virginia senator. “This is going to be a big issue over the next four weeks.”

McConnell signaled he's feeling good about how the Supreme Court fight has left his party entering the final stretch of the fall campaign, but he declined to say whether it would clinch a Senate GOP majority in 2019 and 2020.

“I never say that,” he said, when asked if he was confident that his majority is safe.

“You’re familiar with the places that are a dog fight: Arizona, Nevada, Montana, North Dakota, Missouri, Indiana, Tennessee, West Virginia and Florida,” he said, ticking off what he views as the most competitive Senate races. “They’re all like a knife in an alley.”

A recent poll by Public Opinion Strategies, a GOP survey firm, showed that voters in West Virginia favored the Senate confirming Kavanaugh by a margin of 58 percent to 28 percent. The same firm found that voters in North Dakota favored Kavanaugh 56 percent to 26 percent.