SACRAMENTO (CBS13) — A recall effort is underway against Sacramento Mayor Darrell Steinberg.

The Sacramento Homeless Union says Steinberg has been “all talk and no action” and did not do enough to open warming centers on the worst night of the last week’s storm, which left four people dead.

READ MORE: Trailblazer Flew Through Glass Ceilings As First Female African American Pilot To Fly U-2 Aircraft

The union gave the mayor until Wednesday to step down before launching their campaign.

RELATED: 2 Homeless People Died During Storm Overnight, Sacramento Mayor Says

Sacramento County says warming centers can only open when freezing temperatures are forecast for more than three days. But one was opened last Wednesday night after Steinberg called an emergency city council meeting.

READ MORE: Pressure Behind The Wheel: Sacramento Mover Drove Historic Victorian Mansion Through San Francisco

To trigger a recall, organizers need 28,000 signatures in the next 160 days. But the attorney representing the union, Anthony Price, is confident that mark can be met in the next 30 to 45 days.

“The longer Steinberg remains in office, the more harm will continue to afflict the homeless community,” Prince said.

More from CBS Sacramento:

The union also wrote a letter Gov. Gavin Newsom, asking him not to appoint Steinberg as the next state attorney general, saying he violated county health orders in the pandemic.

MORE NEWS: Early COVID Patient Remembers Military Quarantine After Cruise Ship Outbreak

In a statement, Mayor Steinberg said he had “done more than any public official in Sacramento history” to address homelessness and vowed to continue that effort.