Is The Long Primary Hurting Romney?

Michigan

Josh Marshall thinks so:

[R]unning around the country in a long twilight struggle with Rick Santorum is just … how to put it? inherently demeaning and diminishing. It’s like struggling to land a one pound fish or searching for the way out of a paper bag. People see you doing that and you just look weak and feckless, even pitiful.

(Michigan poll of polls from TPM)