Well there were these but they don't help your cause or support your claim either. . "A Gallup survey conducted last August found results similar to those obtained by Pew Research. More Americans had a positive impression of labor unions (52 percent) than negative (41 percent), although that result was "the second lowest approval rating in Gallup's 70-year history of this trend." A particularly interesting question on that Gallup survey, in light of both the Clarus question and the ongoing controversy in Wisconsin, concerned whether labor unions should have more, less or the same influence as they have today. Forty percent want to see unions have less influence, 29 percent want unions to have more influence and 27 percent want it to stay the same." Says the cut and paste Troll king of ET.
The poll that matters will will be in 2012. You will know for a fact if Walker was a positive or negative for the republicans in Wisconson. My guess is he will rally the democrats in his state, but a lot can happen politically in a year.
In theory the ultimate poll? I would say in practice, not theory... That's why they say that people go to the polling booths on election day...