At the moment, anyway.
Polls taken in states with competitive Senate races and many contested Congressional districts indicate that people are leaning Republican for 2014. The reason seems to be Obamacare, Obamacare, Obamacare:
As for Obamacare, only 16 percent favor keeping the law as it is. 36 percent favor modification. 48 percent favor outright repeal. 89 percent of voters consider the issue important in deciding how they will vote and 49 percent consider it very important.
On immigration, it’s not at all clear:
The pro-amnesty crowd will emphasize that, by a margin of 71-28, those surveyed favor “comprehensive immigration reform.” But the result is meaningless because respondents weren’t asked whether they favor legalizing illegal immigrants, much less whether they favor allowing them to become citizens. Nearly every conservative I know favors some form of comprehensive immigration reform
Why ask a question so general it can be used by nearly anyone to prove nearly anything? Perhaps that’s the goal.