Cause Centrist complacency, driving force of lesser-evilism, and a host of other clear-cut reasons.
Haven't we gone over this enough times?
She was the 11th most liberal senator when she served so this thing about her being a centrist is either ignorance or purist delusion.
11th most liberal member of the senate in the US still means she is a centrist. There is no real left in America.
Of course, Ted Kennedy and Russ Feingold were well-known centrists.
Compared to the left in the rest of the world they were not only centrists but in some countries would just be conservatives. In an international sense even Bernie Sanders is a centrist.
In an international sense you're a far-left nutjob.
In an international sense I am Clement Attlee and Jeremy Corbyn, neither of which are or were far left.