CINCINNATI — On a frigid winter afternoon, scores of people stood shoulder-to-shoulder on Cincinnati's downtown Fountain Square, to chant, cheer, give speeches and wave placards and banners in support of better economic opportunity and union rights.

Linda Watson, a janitor, told of life at minimum wage, depending on a bus for transportation, lacking coverage to pay for medicine, hoping that becoming unionized could help.

"We all need to stick together," she declared.

Loud rallies. Aggressive organizing. Talking proud. Flexing political muscle.

Once common traits of one of America's most powerful movements, today they reflect the fanning of efforts to rekindle unions' importance, after years of decline.

"We think it's going to turn around; we think it's a movement that's going to continue and grow," said Bill Dudley, an organizing strategist for the United Food and Commercial Workers in southwest Ohio.

Watson, who is black, was part of a diverse group including Hispanic workers, civil rights activists and religious leaders in the boisterous rally here. It was one of several across the Midwest this month by a labor coalition — including the UFCW, UNITE HERE and the Service Employees International Union — that has stepped up organizing of lower-wage workers.

Also in March, leaders of the AFL-CIO gathered in Las Vegas to map the federation's strategy for the 2008 elections. They talked about people feeling good again about being in unions, about union pride in the aftermath of 2006 elections that represented one of the best results for labor-backed candidates in decades.

"It's time to finish what we started," said John Sweeney, the AFL-CIO president.

The new Democratic-majority Congress offers hope for labor initiatives, including a bill to make it easier to organize union representation. And established unions are broadening their recruiting efforts to add members from janitors, nurses, casino dealers and other groups beyond their traditional bases.

"The situation for labor is a little more optimistic than it has been in awhile," said John Schmitt, senior economist for the Center for Economic and Policy Research, a nonprofit think tank. "That said, the labor movement is really in a significant squeeze. There's a lot of movement and activity to address it right now."

Mark Weaver, a veteran Columbus-based Republican strategist, said that while unions remain effective at mobilizing their voters, they are being eclipsed in political importance.

"One thing that we know is that 40 years ago, labor unions were the Tyrannosaurus Rex of politics," he said. "Today, they are a smaller, less-dangerous dinosaur. Whether they'll soon be extinct remains to be seen."

A half-century ago, about a third of American workers were members of unions. Federal labor statistics show that's down to 12 percent, after a loss last year of more than 325,000 workers from union ranks.

The fall has been most pronounced in the industrial Midwest, where hundreds of thousands of union jobs have disappeared.

There are a variety of reasons for organized labor's decline, including improved technology and productivity that requires fewer workers, more aggressive anti-union actions by employers in the era after President Ronald Reagan fired striking air traffic controllers in 1981, movement of jobs overseas, and the rise of mostly nonunion foreign automakers. U.S. economic growth also dilutes the urge to unionize.

Much of the economic growth in recent years has been in the Sun Belt, including states with little history of union support but with eagerness to welcome good-pay jobs.

The UAW is still pushing to organize workers at the foreign automakers, and Wal-Mart remains under fire by union groups who criticize the retailer for low wages and benefits and would like to organize its workers. Critics of unions say Americans by the millions vote with their pocketbooks by buying Japanese cars and shopping Wal-Mart.

But experts on labor say there are many Americans who view labor favorably, even though they don't belong to unions, adding potential for growth.