Obama said he would bring healing, but on his third day in office he burned his bridges with Republicans in Congress, saying "Elections have consequences," and "I won."
After that, he could only pass laws with ALL Democrats voting for it, since he could get no Republicans (not even Maine liberal Republican Senators Susan Collins and Olympia Snowe) to vote for Obamacare, or the "porkulus" stimulus bill.
And when the voters realized what a disaster Obamacare, the Democrats took all the blame, and could not hide behind Republicans and say "these guys voted for it too."