Public attitudes about labor unions have been largely stable since the start  of the battles in Wisconsin and other states. A Pew Research poll last week 
found favorable opinions of  unions outnumbering unfavorable opinions by a 47%-to-39% margin, essentially  unchanged from a poll conducted in early 
February. But the battles have  energized union households and liberal Democrats. Among both groups, very  favorable attitudes about unions jumped sharply in the past few weeks.
Most polls have found majorities opposed to recent efforts to limit or  eliminate collective bargaining rights for public employees. A late February Pew  Research poll about the Wisconsin dispute found 
42% siding more with the  public-employee unions than with the governor (31%). Despite recent  Republican criticism of public-sector unions, Pew Research's polling has found  
little difference in opinions  about public-sector vs. private-sector unions.
Attitudes about all of the parties involved in labor disputes -- 
governments, labor unions and 
businesses -- are significantly  more negative today than they were a decade ago. But half or more of the public  believes that labor unions have had a positive impact on conditions for all  American workers, and only a minority believes that union agreements give union  workers unfair advantages. Still, the public has mixed views of the impact of  unions on workplace productivity, the global competitiveness of U.S. companies  and the availability of good jobs in the country.