Earlier quoted context omitted.
If you genuinely couldn't by elections with money, there wouldn't be so much money flowing into politics. Money alone isn't sufficient to guarantee an election outcome, you still have to execute.
That people think it works enough to pay money for it isn't proof that it does. I dub this the 'Ion Bracelet Effect' (though there's probably a better name for it already). "'American Crossroads, the super PAC founded by Karl Rove, spent $104 million in the general election, but none of its candidates won. The United States Chamber of Commerce spent $24 million backing Republicans in 15 Senate races; only two of them…
That's not saying every dollar is the same, and the money -> influence function is a straight line. But money buys reach and coverage at the very least.