Currently, Democrats control the Senate 51 to 47, including two independents who caucus with Democrats, and Republicans control the House 240 to 190, including five seats that are vacant.

Currently, the GOP seems poised to pick up between one and three Senate seats, short of the four needed to win control of the chamber. 

Republican hopes for taking the chamber suffered a hit after Rep. Todd Akin's (R-Mo.) comments in August, that the female body can prevent pregnancies in cases of "legitimate rape," created a political firestorm. Those comments helped his opponent, incumbent Sen. Claire McCaskillClaire McCaskillSenators question need for HHS cyber office Overnight Cybersecurity: Obama DHS chief defends Russian hack response | Trump huddles on grid security | Lawmakers warned about cyber threat to election systems We must protect our most vulnerable from financial fraudsters MORE (D-Mo.), stay competitive in her bid for reelection.

Republicans appear likely to comfortably retain control of the House of Representatives.