Sen. 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 (D-Mo.) gave Sen. Cory Gardner Cory Scott GardnerGraham: GOP will confirm Trump's Supreme Court nominee before the election Gardner signals support for taking up Supreme Court nominee this year Tumultuous court battle upends fight for Senate MORE (R-Colo.) an earful after his car apparently almost hit her outside the Capitol building on Tuesday.

"Probably the only shot you've got to take me out!" she yelled at the driver of the golden sedan, which NBC News's Kasie Hunt identified as belonging to Gardner.

VIDEO: Watch @clairecmc tell NRSC @CoryGardner, after his car almost hit her: "Probably the only shot you've got to take me out!" pic.twitter.com/yG37EtItlg — Kasie Hunt (@kasie) October 24, 2017

Gardner heads the National Republican Senatorial Committee (NRSC), the Republican party's campaign arm for the Senate, which is backing GOP challengers in Missouri against McCaskill.

The NRSC is backing Josh Hawley, Missouri's attorney general fighting for the party's nomination in the race to unseat McCaskill in 2018, and has released a series of vicious attack ads against the two-term Democratic senator.