University of Virginia analyst Larry Sabato believes Republicans should be doing better than they are this year, though, given the huge advantage they have in going after so many Democratic Senate incumbents in Republican-leaning states.“This is the best map for Republicans since 1980,” he said. “They should run up a huge margin based on the conditions that ought to be present in  sixth year [of a president’s term] election. Ain’t happening so far. It’s just not happening.”