Internal GOP polling memo says Senate Republicans are still behind in key races POLITICORepublicans’ Chances of Flipping Key Senate Seats With 3 Weeks to Election NewsweekWhy Trump voters are poised to swing the Senate majority: From the Politics Desk NBC NewsWho controls the Senate? Red-blue party division, explained USA TODAYRepublicans Appear Poised to Take Control of Senate, New Poll Shows The New York Times