Phones have been ringing all over town since District Attorney George Gascón announced he won’t seek re-election next year.

Former Police Commissioner Suzy Loftus got a big boost when Mayor London Breed and a host of women’s groups endorsed her over the other big names in the race, former Police Commissioner Joe Alioto Veronese and Leif Dautch, a state deputy attorney general.

But the door for contenders is still wide open.

Former San Francisco Supervisor and local Democratic Party Chair David Campos tells us he’s “seriously considering” a run.

Other names being floated for the job include Assemblyman and former prosecutor David Chiu and Supervisor Jane Kim.

Then-Mayor Gavin Newsom offered the job to Chiu in 2010 after D.A. Kamala Harris was elected state attorney general, then gave it to Gascón after Chiu turned it down. Word is, Chiu’s position hasn’t changed.

As for Kim, she did not return our call seeking comment.

Matt Gonzalez, chief deputy public defender and a former supervisor who ran unsuccessfully for D.A. two decades ago, tells us he will not be a candidate.

Gonzalez also raised doubts about whether a progressive candidate without law enforcement experience could win the race — particularly after the rough go that lefty attorney and former Supervisor Terence Hallinan had in the job after his election in 1999.

While the city may no longer have a “high degree of hostility to a lot of progressive ideas,” Gonzalez said, “I don’t think the public is going to be open to a civil rights lawyer saying, ‘I want reform.’ They want the nuts and bolts of getting things done.”

As for Campos, he says he’s got the right résumé for the job.

“I was on the Police Commission for a number of years, and I did a lot of work in criminal justice,” he told us.

If Campos jumps in, however, he will almost certainly have to answer again for his Board of Supervisors vote to reinstate Ross Mirkarimi to his sheriff’s job in 2012 after then-Mayor Ed Lee tried to bounce him for a domestic-violence-related misdemeanor conviction. It was an issue when Chiu narrowly defeated Campos for the Assembly in 2014.

“I’m sure they are going to try to revive that issue all over again,” Campos said. “And they will also say I beat baby seals on the beach.”

San Francisco Chronicle columnists Phillip Matier and Andrew Ross appear Sundays, Mondays and Wednesdays. Matier can be seen on the KPIX-TV morning and evening news. He can also be heard on KCBS radio Monday through Friday at 7:50 a.m. and 5:50 p.m. Got a tip? Call 415- 777-8815, or email matierandross@sfchronicle.com. Twitter: @matierandross