Wow! Sense prevails in the US?
Libertarians were elected in Iowa, Idaho, Indiana, Michigan, Ohio, North Carolina and Pennsylvania—54 percent of the states in which Libertarians ran. Libertarians in Michigan won four of the five known races in that state where Libertarians were involved—a stunning 80 percent rate of victory.
The one immediate explanation I can think of is that the sensible people who used to vote Republican because of their position on economics might have become disgusted by that party because it has obviously forfeited those leanings, and now are voting their true position - libertarian - instead.

The real liberals are those who advocate liberty not just in the social sphere, as the Democrats, but also in the economy. The economic kind of liberty used to be represented by the Republicans; but there used to be no way to vote for both. If the trend of Libertarians picking up pace continues, that could be a harbinger of good times to come in the States. At least - one may hope.

Meanwhile, the campaign of the somewhat-libertarian presidential candidate Ron Paul seems to be doing well at this stage. I don't agree with him on everything, but the things we do agree on are so important that I cannot not endorse his bid. Vote Ron Paul in 2008. He seems the only reasonably sane candidate. Even one such candidate is more than can be said for most elections.