Democrats running scared? I certainly think so, scared of Obamacare, scared of Obama himself. Democrats usually support each other till death do them part. When it comes to Obamacare a different tone is being set within the Democratic Party. Dems know that this legislation is toxic and has already once escorted a large amount of democrat candidates out of office. They know that this will happen again now that the Supreme Court has reopened the flesh wound that was created back in 2010.
The best strategy for many liberal candidates is going to be Anti Obamacare and in some cases Anti Obama. This is not good for any party when people within it have to separate themselves from the party leader.
House democrats are even leaning to vote with republicans on the repeal of Obamacare. Why would they do this on something that they helped put into law? Simply because they knew the American people did not want this law before it was passed and still do not want it now that we have it. They know that the main thing accomplished in this law is to divide this country by class even farther than it already is. If you ask me this is exactly what they want to happen. They want to bring more people into the government handout side of the economy. This is by design because the more people dependent on the government the more people you have to vote in the liberals!