A step back from individual races would seem to help Republicans, since the first midterm election for a president has long presaged losses for his party in Congress. But as Kyle Kondik of Sabato's Crystal Ball at UVA has written: "Senate midterm history is not quite as bleak for the presidential party as the House history is. Yes, the president's party often loses ground in the Senate in midterm elections, but the losses are not as consistent: Since the Civil War, the president's party has only lost ground in the Senate in 24 of 40 elections, with an average seat loss of roughly 2.5 per cycle...