Lincoln Chafee ACU rating %12
Hillary Clinton ACU rating %12
Yes, yes, keep the party liberal. It's all about POWER.
You're crying over spilled milk, which is what babies do. If there is a liberal GOPer running in the general, the fight you're referring to is already over. It's called a primary. In the general, if I have a choice between two liberals, one of whom helps keep Republican control of the judiciary committee (just to name one), and one of whom helps to achieve DEM control, then it's a friggin no-brainer.
Sorry, just want to tack on one last thought: You're goddamn right it's about power. This is politics in the most powerful country in the world. It's not tiddlywinks.