This is a demographic, we will remind you, that voted 71-27 for President Obama just two years ago. And only 15 percent are concerned about a GOP-controlled Senate.

While there is a fairly big margin of error (plus/minus 10 points) in this sub-sample, those are still striking numbers — and they comport nicely with the idea of Hispanics’ declining faith in the Democratic Party. And if you can’t get voters to believe something will change, it’s hard to make a convincing case to get them to vote.

President Obama, for instance, has said that with a Democratic-controlled Senate, there would be “at least one branch in Congress that is presenting these ideas, making arguments” on such things as minimum wage and equal pay. Sounds like a debating society.