WATCH: Embattled GOP senator warns red state ‘at risk’ of historic Dem victory as voters head to polls

Texas GOP Sen. John Cornyn warns the state is at risk of a historic Democratic victory in a critical Senate runoff election against challenger Ken Paxton. Cornyn expresses concern that Paxton's legal and personal controversies could enable Democratic candidate James Talarico to flip the seat, jeopardizing Republican control of the Senate and down-ballot races. President Trump has endorsed Paxton despite his scandals.