The more ads you run, the more money you spend. A Federal Election Commission (FEC) report filed today shows that the pro-Romney super PAC called Restore Our Future raised just more than $6 million in February—but spent twice that amount. As Romney enters what may be the final leg of the nomination process with a win in Illinois, the super PAC has $10 million cash left. Meanwhile, Gingrich’s top super PAC raised—and spent—nearly $5 million during the month. The pro-Santorum Red, White, and Blue Fund raised a meager $3 million in February and only has $365,000 left in the bank. With GOP candidates running low on funds, super PACs are more important than ever, which may not bode well for the anti-Romney brigade.