My answer to this is the "Green Dog Democrat". Green Party folks should become Democratic, that way, they can turn the party left-ward.
Considering the Prez, there's a lot that he's done right & he pretty cool on many areas but in some areas he's Bush 2.0.
On one hand, he's fairly Progressive in regards to social mores & civil rights in regards to ethnicity, religions, sex, gender, sexual orientation, etc. However, he's into PRISM, hasn't done a thing about Guantanamo, the drone thing & appointing questionable people in certain positions.
Sometimes he's an awesomely cool, Blue State sorta guy but sometimes he's possessed by pod-aliens from the Red State dimension.
I wonder if his more Regressive policies are due to trying to please or win the trust of the GOP. If so, he's the most naive person I've ever seen in my life.
Honestly, I have a weird feeling about him. I miss the Progressive, youthful, refreshing, former-community-organizer, "Change" guy.
Instead, we have the Neville Chamberlain of US Presidents....decent guy, perhaps, but appeases way too much.