The Libertarians might get past 5% in an election one year but the Republicans will get their sh*t together and fix themselves.
OK, please. The Libertarian movement is not derived out of the Republican Party, that will never be the case. They are explicitly running against the republicans on 50-60% of issues.
I agree that they are fundamentally different ideologically. However, this is irrelevant. It's about how they will be perceived. Their fiscal conservatism will attract dissatisfied Republicans more than it will ever attract Democrats.