From a super PAC that backs President Obama, a new ad about tax fairness featuring President Ronald Reagan, radical lefty:
"They've sometimes made it possible for millionaires to pay nothing, while a bus driver was paying 10 percent of his salary, and that's crazy."
Two main strands of the Democratic strategy so far: Help Mitt Romney and Newt Gingrich battle longer, and pound the GOP on class fairness.
(H/t Greg Sargent)