Earlier this month, Nancy Rosenblum, the Senator Joseph S. Clark Professor of Ethics in Government and Chair of the Department of Government at Harvard, visited the Rockefeller Center and delivered a public lecture on the moral distinctiveness of political party identity. She is both contrarian and clever in the way she takes apart self-styled "independents," who let their self-styled independence of thought remove any consequence they might have in electoral politics if they remain independent from their fellow voters. She makes the affirmative case for ambitious political parties as sources of morality in politics.
The video is definitely worth your time. For more, see her full explanation in On the Side of the Angels: An Appreciation of Parties and Partisanship.