All 36 Senate seats , and November in the Senate are on the ballot in November . Control of the House is the big story of the midterms . Senate Republican face a difficult task of maintaining their majority . Republican success could be determined , in part , by outrage over Obamacare .
All 435 House seats , and 36 in the Senate are on the ballot in November . Control of the Senate is the big story of the midterms . Senate Democrats face a difficult task of maintaining their majority . Republican success could be determined , in part , by outrage over Obamacare .