The Economist, via Glenn:
Libertarians are a generally Republican-leaning constituency, but over the last few years, their discontent has grown plain. It isn't just the war, which some libertarians supported, but the corruption and insider dealing, and particularly the massive expansion of spending. Mr Bush's much-vaunted prescription drug benefit for seniors, they fume, has opened up another gaping hole in America's fiscal situation, while the only issue that really seemed to energise congress was passing special laws to keep a brain-damaged woman on life support.
Oh, yeah. But Glenn left out this important snippet:
In two of the seats where control looks likely to switch, Missouri and Montana, the Libertarian party pulled more votes than the Democratic margin of victory. Considerably more, in Montana. If the Libertarian party hadn't been on the ballot, and the three percent of voters who pulled the "Libertarian" lever had broken only moderately Republican, Mr Burns would now be in office.
Of course the rest of the piece isn't exactly encouraging.