Already it's grown much more difficult for senators to win in states that usually vote the other way in presidential elections. Democrats hold just two of their 26 Senate seats and are at high risk of losing one of them, Heitkamp's seat in North Dakota. Democrats hold just two of their 26 Senate seats and are at high risk of losing one of them, Heitkamp's seat in North Dakota. Democrats hold three of their four Senate seats, but Nelson is in a tough race to hold one of those in Florida. In all, Republicans already hold 43 of the 52 Senate seats in the 26 states they have carried in at least four of the seven presidential elections since 1992.

Source: CNN November 06, 2018 11:03 UTC