Democrats face a tough challenge to reclaim control of the Senate, up against the Republicans’ 53-47 majority. 35 seats are up for re-election, 23 belonging to Republicans and 12 to Democrats. As per Cook Political Report, nine Republican-held seats are rated as either leaning Democratic or toss-ups. In the House, Democrats hold a 232 to 197 majority. 27 House races are identified as ’toss-ups’.