Pew Research Center: Democrats lead 47/42 on the generic ballot, but Republicans are twice as likely to feel optimistic about the midterms.
Well considering the media and pundits have been endlessly ranting about a GOP wave/2010 redux for a while now, it's not surprising Republicans are more optimistic. What is surprising is that the media continues to try to drive this narrative despite it contradicting their own polling data.
Republicans will have to win the expectations game now. It will not be that demoralize to Dems if they still have like 48 or 49 seats. Republicans will be crushed if they lose.