Amazon’s (AMZN) decisive victory on Friday against a union campaign in an Alabama warehouse marks a major defeat for labor advocates, but it’s far from the end of workers’ efforts to organize at other Amazon facilities across the country.

Former Amazon vice president and engineer Tim Bray, who resigned in protest last May over the company’s firing of workers who’ve spoken out about coronavirus fears, said the sheer effort Amazon put into defeating the union vote indicates the strength of the workers’ drive to organize.

“The fact that the election even happened, and that Amazon had to spend millions hiring the help of America's anti-labor apparatus of law firms and propagandists, should be seen as an inflection point,” Bray told Yahoo Finance. “This struggle isn't ending any time soon.”

The organizing efforts captured national attention, including from President Joe Biden, in part because of Alabama’s reputation as an anti-union state. Advocates had hoped the tide was turning in favor of unions, especially since Biden picked former union leader Marty Walsh to be his Labor Secretary.

“I think this result comes as a surprise to the union, and they're going to have to sit back and take stock and figure out where they want to go from here,” Paul Clark, professor and director of Penn State University’s School of Labor and Employment Relations, told Yahoo Finance.

“They’re going to have to carefully analyze what happened in Alabama before they move on to other warehouses,” Clark added.

The vote against the Amazon union was decisive Friday. Of the 5,876 Amazon workers eligible to vote at the Bessemer facility, just 3,041 cast ballots with 1,798 voting against joining the Retail, Wholesale, and Department Store Union, or RWDSU, and 738 voting in favor of it.

“I think the vote in Bessemer, Al. shows us how difficult it will be to organize these facilities,” Will Brucher, a labor expert at Rutgers University’s School of Management and Labor Relations, told Yahoo Finance.

In a statement following the vote, the RWDSU said it will file an official objection with the National Labor Relations Board (NLRB) saying Amazon interfered with workers’ rights to vote. If successful, the challenge could decertify the results and prompt a second election.

Amazon, meanwhile, praised the outcome of the vote by saying it wasn’t a win for the company, but rather a victory for employees who had their voices heard.

Labor laws are not an ‘even playing field’

The Bessemer, Al. vote follows worker protests at a host of Amazon facilities across the country during the pandemic, including walkouts by workers who feared that Amazon wasn’t being open about infection rates at its warehouses.