Well I live in a LibDem/Tory marginal, and I held my nose and voted LibDem six times to keep the Tory out. It worked every time. The LibDem leaflet that came through the door last time said "don't let the Tories in to ruin the country," sort of thing. Jesus wept. I'll probably have to do it again, but I not-so-secretly wish the LibDems a permanent and ignominious oblivion.