From Steve Benen on Maddowblog:
In 1991, former KKK leader David Duke won a Republican gubernatorial primary, and GOP officials from across the country wanted nothing to do with him. The party explored a variety of alternatives, but eventually, even Gov. Buddy Roemer (R) officially endorsed the Democratic nominee, Edwin Edwards.
This wasn’t easy – Roemer had previously taken an “Anyone But Edwards” posture – but when the Republican nominee was considered outrageously unacceptable, it made sense to announce support for the rival candidate.
Edwards was burdened by a series of corruption allegations at the time, leading to a famous bumper-sticker campaign: “Vote for the crook, it’s important.” (Edwards ultimately defeated Duke by 22 points.)
It might be embarrassing, but it’s a unique bumper sticker.