It's not merely that conservatives are better at selling their product, or that they happen to have an easier-and undoubtedly simpler-ideological product to sell. It's that they know what they are selling. Liberals in general and Obama in particular cannot say the same.
“I grew up at 'All My Children;' I got married, had a daughter and made life-long friends there!”
“Persian social manners are well known, and there is no other society that can compete with them.”