Eh, what both Starvid and Sahlin (aka "of all people ... that woman!") are engaging in is hyperbole. A politician of the opposition taking shots at the government? I'm shocked, shocked, I tell ya! Not.
It's clearly not a "historic betrayal" that Reinfeldt attempted putting lipstick on the pig that is the Moderate party; the SDP has been doing the same for many years.
It seems to me that the centre-right victory in last year's election can to a large extent be credited to Göran Persson-fatigue, and perhaps also a general sentiment that it's not a particularly good idea to have one party monopolising power for decades on end.

"The basis of optimism is sheer terror" - Oscar Wilde