Once the "tea party" (you know, the Republican party) got mad, Democrats got scared. The Tea Party was kind of scary, so I get having personal safety concerns, though of course a grass roots revolt of Real Americans can never be criticized, but they were scared of the politics. They were scared of losing in the polls. They were scared that all of those people calling their offices (and they did, all day every day) might not vote for them.
Too many of them did not understand that those people will never ever vote for them.