It's not hard to explain Romney's recent surge in Florida when you take into account how much Romney's campaign and allied Super PAC are outspending Gingrich by:
Newt Gingrich has been outspent on the Florida airwaves by a nearly $12 million margin, according to a source monitoring the Sunshine State ad war.
Through Friday, the Romney campaign and the super PAC Restore Our Future had spent a combined $15,340,000, the source said. Gingrich’s campaign and the super PAC Winning Our Future spent a comparatively paltry $3,390,000.
This is a ridiculously large discrepancy in ad money and it's having the obvious and desired effect - burying Gingrich in Florida.