There's a curious strategy in election primaries in that if you have dirt on a candidate from the opposition party, it's best to hold it. It does you no good to let the cat out of the bag during the primary season and wind up prematurely eliminating a potentially vulnerable candidate from the running. Instead, you continue to hold the information closely until after the guy is nominated. Only then do you release it -- noisily -- in the hopes that it'll be enough to torpedo the guy in the general election, thus ensuring sweet victory for your party.
This is just what's in play right now with Ron Paul. Ron Paul has accepted money from StormFront, a known racist white supremacist group, has posed for a picture with the leader of said group, and yet there's been next to nothing in the news about it. Sure...if you search on Yahoo or Google, you'll turn up an article or two about it. But one would think that when a man with aspirations to become President of the United States has friends like this it would be splashed all over the front pages of the various news outlets. But no, the Democrats and their media fan club don't want to let the cat out of the bag just yet. Better to see if he gets the Republican nod and only then unleash the hounds.
What mystifies me is why the other Republican candidates haven't been bringing this up. Ron Paul may not be polling all that well (except in meaningless Internet polls which his brain-dead supporters can swarm), but he's taking in an awful lot of money which might go to more worthy candidates.