McConnell-aligned group pushes for conservative Supreme Court nominee in campaign ad

A group aligned with Senate Majority Leader Mitch McConnellAddison (Mitch) Mitchell McConnellSchumer: Trump's team made case for new witnesses 'even stronger' Trump, Democrats risk unintended consequences with impeachment arguments CNN's Axelrod says impeachment didn't come up until 80 minutes into focus group MORE (R-Ky.) has launched an ad campaign centered on the looming Supreme Court vacancy in states where Democratic senators are up for reelection.

One Nation published its first batch of advertisements on Thursday urging voters to tell their Democratic senator to support President TrumpDonald John TrumpKaine: Obama called Trump a 'fascist' during 2016 campaign Kaine: GOP senators should 'at least' treat Trump trial with seriousness of traffic court Louise Linton, wife of Mnuchin, deletes Instagram post in support of Greta Thunberg MORE’s nominee to replace Justice Anthony Kennedy, who announced Wednesday that he intends to retire effective July 31 after 30 years on the bench.

“Our freedom hangs in the balance, but the far-left will stop at nothing to block President Trump’s choice,” the ad warns.

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Politico reported that the ads will air in Indiana, Florida, Michigan, Missouri, Montana, North Dakota, Ohio, Pennsylvania, West Virginia and Wisconsin -- all states where a Senate Democrat is seeking reelection.

Vulnerable incumbents such as Sens. Claire McCaskillClaire Conner McCaskillHow Citizens United altered America's political landscape #MidnightMoscowMitch trends amid criticism of McConnell's proposed impeachment trial rules The most expensive congressional races of the last decade MORE (Mo.), Heidi HeitkampMary (Heidi) Kathryn HeitkampSusan Collins set to play pivotal role in impeachment drama Pro-trade group launches media buy as Trump and Democrats near deal on new NAFTA The Hill's Morning Report — Biden steadies in third debate as top tier remains the same MORE (N.D.), Joe DonnellyJoseph (Joe) Simon DonnellyGinsburg health scare raises prospect of election year Supreme Court battle Watchdog accuses pro-Kavanaugh group of sending illegal robotexts in 2018 Lobbying world MORE (Ind.) and Joe ManchinJoseph (Joe) ManchinDemocrats Manchin, Jones signal they're undecided on Trump removal vote Schiff sparks blowback with head on a 'pike' line Schiff closes Dems' impeachment arguments with emotional appeal to remove Trump MORE (W.Va.) will likely face pressure to vote for Trump’s nominee in order to garner support from moderate constituents.

Kennedy's retirement provides Trump with the chance to nominate another conservative justice, further altering the judicial landscape for years to come.

Trump told reporters Wednesday that he plans to begin the search for a replacement "immediately," adding that the pick will come from the previously announced White House list of 25 candidates.