Former presidential candidate and Texas U.S. Rep. Ron Paul raised about $40 million when he ran for the nation's top office in 2012.
That seems like a lot of money — and a heck of a fundraising base for the ex-congressman's son, U.S. Sen. Rand Paul, to build from should he decide to make a run for president in 2016.
But the man who won the 2012 nomination, former Massachusetts Gov. Mitt Romney, spent more than $75 million, and that doesn't include about $50 million in super PAC money spent on his behalf. And that was just to win the nomination.
So one of the many big questions facing Rand Paul, weeks from announcing his Senate re-election effort and a winter away from announcing whether he will run for president, is whether he can raise the big money needed to mount a winning presidential run.