Schwartz's connection to Third Way drew attention in early December, when the Wall Street front group published a Wall Street Journal op-ed attacking Sen. Elizabeth Warren, liberal populism, and Social Security. At the time, a spokesman said Schwartz "thought Third Way's Op/Ed on Social Security was outrageous and strongly disagrees with it" and reiterated her support for Social Security and Medicare; Schwartz quickly signed on as a cosponsor of a bill to expand Social Security. Now, as Schwartz leaves Third Way, Daily Kos' source says that "The Third Way op-ed made this a much easier decision to make."
If you want a sign of how unpopular Third Way's agenda is, look no further than the fact that Schwartz is leaving just as she's running statewide in Pennsylvania, a state that has a Republican governor, Republican-dominated state legislature, and one Republican senator despite having voted Democratic in recent presidential elections. Clearly she doesn't think that there's some population of "centrist" purple-state voters out there yearning for a Democrat who'll cut Social Security.