None whatsoever. It’s almost entirely a function of jobs report/economic issues. Note that it hasn’t been a straight rise, which is what you would expect if it had anything to do with the Republican race. Indeed, since gas prices went up, Obama’s approval ratings are, once again, dropping. He’s lost six points in the last two weeks and is once again underwater with more disapproving than approving. that’s almost entirely a function of gasoline prices.