This is where I saw it:
http://pjmedia.com/tatler/2013/10/10/about-that-nbcwsj-poll-that-killed-republicans-on-the-shutdown/
"Then lets factor in the polls partisan sample, which was 43-32 Democrat, the percent that admits voting for Obama, which was 44 versus just 35 for Romney, and this looks like a left-heavy sample."