Mitch McConnell's retirement ends his 40-year hold on this seat — the first open Senate race in Kentucky since 2010.
U.S. representative since 2013; won the GOP nomination with Trump's endorsement.
Campaign website →Former state representative from Louisville, running for the seat a third time.
Campaign website →No neutral general-election poll of Barr vs. Booker has been released yet. Nonpartisan race raters — Cook Political Report, Sabato's Crystal Ball, and Inside Elections — all rate the seat Solid/Safe Republican, with Cook assigning it an R+7 partisan lean.
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Where each candidate stands on campaign-finance questions.
Campaign committee totals for the 2025–26 cycle, through June 30, 2026. Under-$200 share is unitemized individual contributions divided by total receipts. FEC filings →