Sen. Dean Heller Dean Arthur HellerOn The Trail: Democrats plan to hammer Trump on Social Security, Medicare Lobbying World Democrats spend big to put Senate in play MORE (Nev.), one of the most vulnerable Republicans running for reelection this fall, celebrated Brett Kavanaugh's confirmation to the Supreme Court on Saturday while blasting Democrats for the bitter nomination process.

"Justice Kavanaugh. Confirmed!" Heller tweeted shortly after he joined nearly every GOP senator in voting to install Kavanaugh on the high court.

Heller slammed Democrats’ handling of Kavanaugh’s confirmation, suggesting it would only excite the GOP base heading into the November midterms.

“Democrats think political games and smears will win them votes, but it only fuels our momentum,” he asserted.

Democrats think political games and smears will win them votes, but it only fuels our momentum. — Dean Heller (@DeanHeller) October 6, 2018

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Heller's comments echoed the optimistic tone set forward Saturday 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.), who predicted in an interview with The Hill that the Kavanaugh win would be "a shot of adrenaline" for Republicans' chances in the midterms.

Heller is running for his second full Senate term in a state Hillary Clinton Hillary Diane Rodham ClintonDemocratic groups using Bloomberg money to launch M in Spanish language ads in Florida The Hill's Campaign Report: Presidential polls tighten weeks out from Election Day More than 50 Latino faith leaders endorse Biden MORE won over 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 by 2.5 points in 2016. The Cook Political Report rates his race against Rep. Jacky Rosen Jacklyn (Jacky) Sheryl RosenHillicon Valley: Election officials prepare for new Russian interference battle | 'Markeyverse' of online fans helps take down a Kennedy | GOP senators unveil bill to update tech liability protections Google, Apple, eBay to meet virtually with lawmakers for tech group's annual fly-in Senate Democrats demand answers on migrant child trafficking during pandemic MORE (D-Nev.) as a “toss up.”

Heller is also hoping to be propped up by Trump’s endorsement in the race. The president rallied with Heller last month in Las Vegas.

“I've had no better friend in Congress than Dean Heller,” Trump said.

Republicans currently hold a 51-49 majority in the Senate, and any one race can decide which party gets control of the body next year, though they have a more favorable map than Democrats, with 10 Democrats running for reelection in states won by Trump in 2016.

The Kavanaugh nomination injected a heightened sense of partisanship in the Senate and excited both Republican and Democratic bases heading into the midterm elections.

The bitter confirmation process escalated last month when Christine Blasey Ford, a college professor from California, came forward to accuse Kavanaugh of sexually assaulting her at a high school party in 1982. Two other women later came forward with allegations of sexual misconduct, all of which Kavanaugh denied.

"The fact that Senator Heller did not have a single reservation about confirming Judge Kavanaugh and even dismissed credible allegations of sexual assault against him as nothing more than ‘a little hiccup’ in the confirmation process shows that he’s clearly out of touch with Nevadans and never had any intention of being an independent voice on this Supreme Court nominee,” the Rosen campaign said in a statement.

"Voters will hold Senator Heller accountable for becoming just another rubber stamp for President Trump’s nominees and his reckless agenda in Washington," it added.

Multiple polls show a narrowing enthusiasm gap between Republicans and Democrats heading into November after Democrats had opened up comfortable margins in recent months.