[majewsky]

> But it does mean that fringe extremist parties can get pet policies passed by holding their partners feet to the fire that the majority of the population wouldn't vote for

Evidence for this: CSU in Germany (the quite-a-bit-more-right-wing sister party of Merkel's CDU).

[lostlogin]

Evidence of it would be present in just about every MMP government ever formed. Here in New Zealand it's present. Sure, the tail wags the dog a little, but if it happens too much the larger party in government loses votes next election.