Young Libertarians Flaky?

The title of this post by Katherine Mangu-Ward (no relation) Young Libertarians Flaky, Increasingly Republican-Leaning caught my attention...Most of the article is based on a study that in part said:

Libertarians are about 14 percent of the electorate. Libertarian voters swung away from Bush and the GOP in 2004 and 2006, but in 2008 they swung back, voting for McCain by 71 to 27 percent.

Younger libertarians voted 59 percent for Obama versus 36 percent for McCain. But their enthusiasm for his policies may be short-lived. Younger Americans are an optimistic generation, but easily shaken when things go badly. If unemployment continues to remain weak, an economic issue that disproportionately affects young people, this generation of voters could quickly become disillusioned with Obama’s policies.