There are lots of reasons to believe the November elections should be great for the Republican Party: Midterms are generally kind to the out-of-power party, the president's party almost always loses seats in year six of an administration, the 2014 map is favorable to Republicans, and President Obama's approval ratings are pretty low. Republicans even have reasonable hopes for a really big "wave" election, like every election since 2006, minus 2012.
But if the Republicans are going to ride an anti-Democratic wave to big pickups in the House and Senate, there are scant signs of it now, says Nate Cohn at The New York Times.
The race for the Senate, at least right now, is stable. There aren't many polls asking whether voters would prefer Democrats or Republicans to control Congress, but the Democrats appear to maintain a slight edge among registered voters. Democratic incumbents in red Republican states, who would be all but doomed in a Republican wave, appear doggedly competitive in places where Mitt Romney won by as much as 24 points in 2012.... The light-blue Democratic states and purple presidential battleground states, like Colorado, Iowa, Michigan, Minnesota, and New Hampshire, all seem to be heading toward tight races or Democratic wins, as one would expect in a fairly neutral year. [New York Times]
None of that means Republicans will have a bad year, or even that they won't win control of the Senate in a non-wave election. In fact, there weren't clear signs of a wave election in 2006, 2008, or 2010 until after this point in the election cycle, Cohn writes. "But as July turns to August, the GOP is now on the clock.... Every day that goes by without a shift toward the GOP increases the odds that there will not be a wave at all."