Well, the poll (conducted on Twitter) gave four options, namely Bitcoin(54%), Gold(36%), 10-year U.S. Treasury Bonds (8%) and Federal Reserve Notes (meaning Dollars) (2%). It can be assumed that the majority of Ron Paul's twitters followers are (or at least lean) Libertarian (who have a varying degree of distaste towards the Federal Reserve). Treasury Bonds and Gold are absolutely the safest bets from a historical standpoint.

Think about it this way, $10,000 basically fell from the sky and the only requirement to keep it is to invest it in one of those four things. If you wanted to take a real gamble for some serious dough in ten years (with basically zero risk since you lose nothing you had before the money appeared), investing it in Bitcoin (around 0.6btc) will potentially be worth upwards of a million dollars according to some speculators.

I'm sure if they could split the investment in multiple parts most would, but that is much too complicated for a simple Twitter poll.

Regardless, how would you handle it if given the opportunity?