I think there are 25 Democrat Seats up, but only 10 Republican ones.
Keep this is mind when Dems say there is going to be some magic sweep. Even IF the Dems somehow gained steam on their "Fix Nothing, Russia Russia Russia, Believe the Woman" so-called Platform, their gains are totally limited.
There are 435 seats open in the House. Getting the Senate only requires +2, but you are correct, that the Dems are handicapped by the numbers defending in 2018.
Keep this is mind when Dems say there is going to be some magic sweep. Even IF the Dems somehow gained steam on their "Fix Nothing, Russia Russia Russia, Believe the Woman" so-called Platform, their gains are totally limited.
Paul Ryan is leaving in 2018. The Swamp Creatures are "Self-deporting", not wanting to risk outrageous moves of Graft under the gaze of GEOTUS and his Twitter Account.
https://www.politico.com/magazine/story/2017/12/14/paul-ryan-retire-speaker-ready-leave-washington-216103 #Politics