They ranged from the enormous — a Washington-based teachers union gave more than a half-million dollars — to much smaller contributions. A United Auto Workers chapter in Tennessee chipped in $15,000.

Stacey Abrams, the runner-up in the 2018 gubernatorial election, boasted about her pro-union stances throughout the campaign. She assiduously courted labor and, after one testy closed-door meeting, her allies persuaded a prominent union to endorse her rather than sit out the primary.

Her pro-union stance helped pad her campaign coffers. She collected more than 80 contributions from unions in Georgia and across the nation, including groups representing steelworkers in Alabama, painters in Maryland and domestic workers in California. In all, that amounted to about $400,000 from unions, including $150,000 from those in Georgia.

‘Great impact’

The fight for union support might help explain the sharp reaction from Amico’s rivals to her first public event. Clarkston Mayor Ted Terry, one of the other two Democrats in the race to challenge U.S. Sen. David Perdue, pointedly noted that he’s the only union member in the contest.

He also took to social media, posting pictures of a 2015 picket line that he attended outside AT&T’s office in Atlanta and a Teamsters rally he attended in 2016.

"Remember that most politicians are full of (expletive)," he said on social media. "Don't just believe what they say, look at what they've done, and then you will know where they stand."

He and the other Democratic contenders for the seat — Amico and former Columbus Mayor Teresa Tomlinson — will attend a major union-organized Labor Day event in Atlanta on Monday, as well as a string of other weekend events.

At Amico’s campaign kickoff, she told picketers that she fought to preserve jobs for her car-hauling firm’s union members even as she filed for bankruptcy protection. She called herself a “committed capitalist, but a compassionate one.”

She was surrounded by veteran union members who have seen organized labor's decline over the decades. Federal data shows union membership has fallen from roughly 20% of the U.S. workforce in 1983 to about 10.5% last year.

Among them was Grace Chandler, a retired BellSouth worker who has witnessed the ebb of union clout. She predicted political powers would be surprised in 2020, though, as organized labor flexes its muscle in elections.

“Labor unions still matter in Georgia politics,” she said. “And we will make sure people know that next year.”

Rita Scott, the political director for the Communications Workers of America chapter that helped organize the AT&T strike, said local unions are now preparing their plans for 2020.

“When people ask whether I think unions are declining, I ask them whether people who are going to work are declining,” Scott said. “Look, union membership is falling. But we are going to have a great impact next year because our workers are suffering.”