If you listen to political pundits, the people who matter most in American politics are the swing voters. They’re the ones in the middle who sometimes vote for Democrats and sometimes “swing” to Republicans. I’m going to tell you why swing voters are really just suckers who get fooled every time.
There are some voters who are reliably with one party or the other. There’s a coalition of progressive left groups who are always going to vote for Democrats. There’s a coalition of social conservatives and economic conservatives who are always going to vote for Republicans. With few exceptions, the people in those groups are generally happy when their side is in power.
Then there are people who don’t fit into either of the mainstream camps. A lot of those people are libertarians (self-identified or otherwise) and a lot of them are simply moderates who don’t want to see either side of the mainstream become too dominant. And then there are people who don’t really know that much about what they believe, but they just don’t really like either side of the mainstream.
It’s the people in those middle groups who push elections one way or the other — as they swing from one mainstream party to the other. They were with Barack Obama in 2008, because they wanted almost any Democrat after eight years of George W. Bush, but they swung to Republicans heavily in 2010 congressional elections, because they didn’t like it that Obama had been doing what anybody should have known he was going to do as president.

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