Not all union members are democrats. I used to belong to a union many years ago and I always voted republican or independent.
The same could be said of polls showing Walker’s numbers up. Dems could claim that they over sampled republicans.
Polls are polls. They aren’t just reliable when they favor republicans. THAT is the point.
Admitting that it was UNION FAMILIES that turned the poll toward the unions is admitting that they over weighted Democrats.
I know that not all union families vote Democrat, but the majority sure do.