McCaskill zings GOP senator over car incident

Sen. Claire McCaskillClaire Conner McCaskillSenate blocks bill that opponents say weakens water pollution rules Senate GOP wary of new tax cut sequel GOP Senate hopefuls race to catch up with Dems MORE (D-Mo.) gave Sen. Cory GardnerCory Scott GardnerColorado must fight to protect net neutrality Senators demand info on unusual surveillance activity in DC Family, friends mourn death of Barbara Bush 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.

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.