Ron Paul ad attacks Newt Gingrich’s serial hypocrisy (VIDEO)

While I’m obviously not a fan of Republican presidential candidate Ron Paul, this is a really well-produced ad:

This ad isn’t too dissimilar from an ad being run by the DNC attacking former Massachusetts governor Mitt Romney for his plethora of flip-flops, and it’s curious to me that despite their myriad flip-flops on issues ranging from climate change and Rep. Paul Ryan’s proposed federal budget (Gingrich) to the right to choose and the individual health insurance mandate (Romney), both men are still considered serious contenders (frontrunners, even) for the Republican presidential nomination