The Senate race in Michigan may prove to be much closer than had originally been anticipated. The Democrat, Gary Peters, had initially been expected to win fairly easily. And indeed, the RealClearPolitics average of polls shows him with an average lead of 5.4 percentage points; which is fairly substantial.
But this may be a bit misleading, as the four older of the eight polls being averaged show Peters with a lead of about 7.8 points, whereas the four newer polls show him leading by only 3.0 points, on average. So the race is certainly trending in favor of the Republican candidate, Terri Lynn Land:
http://www.realclearpolitics.com/epolls/2014/senate/mi/michigan_senate_land_vs_peters-3820.html Still, Michigan is a somewhat blue state--not nearly so much so as California or New York, but certainly more blue than it is red (or even purple). So this has to be considered, whenever evaluating the candidates' chances.
But if there is a Republican wave in November--as some analysts are now predicting--Michigan could actually turn red for this one season.