Takes a lot of money, obviously. In fact, the guy who raises most, nearly always wins. That, and other minor facets of American presidential elections in this piece Iowa: The Meaningless Sideshow Begins
Those numbers tell us that both parties rely upon the same core of major donors among the top law firms, the Wall Street companies, and business leaders – basically, the 1%. Those one-percenters always give generously to both parties and both presidential candidates, although they sometimes will hedge their bets significantly when they think one side or the other has a lopsided chance at victory. That’s clearly what happened in 2008, when Wall Street correctly called Obama as a 2-1 (or maybe a 7-3) favorite to beat McCain.
The 1% donors are remarkably tolerant. They’ll give to just about anyone who polls well, provided they fall within certain parameters. What they won’t do is give to anyone who is even a remote threat to make significant structural changes, i.e. a Dennis Kucinich, an Elizabeth Warren, or a Ron Paul (hell will freeze over before Wall Street gives heavily to a candidate in favor of abolishing their piggy bank, the Fed). So basically what that means is that voters are free to choose anyone they want, provided it isn’t Dennis Kucinich, or Ron Paul, or some other such unacceptable personage.
If the voters insist on supporting such a person in defiance of these donors – this might even happen tonight, with a Paul win in Iowa – what you inevitably end up seeing is a monstrous amount of money quickly dumped into the cause of derailing that candidate. This takes overt forms, like giving heavily to his primary opponents, and more covert forms, like manufacturing opinions through donor-subsidized think tanks and the heavy use of lapdog media figures to push establishment complaints.
And what ends up happening there is that the candidate with the big stack of donor money always somehow manages to survive the inevitable scandals and tawdry revelations, while the one who’s depending on checks from grandma and $25 internet donations from college students always winds up mysteriously wiped out.