Because the SF people vote her in like sheep, again and again. She knows her seat is not threatened, so she'll vote in her _own_ interests.
I refuse to vote for her. I'll vote for the Republican challenger every time.
I refuse to vote for her. I'll vote for the Republican challenger every time.
I don't mean this as a defense of Pelosi though. I'm also in CA-12; I usually just abstain from voting for US Rep.