Supporters of a Denver ballot measure to pass a sales tax to expand mental health and addiction services plan to turn in more than twice the required signatures Thursday to get on the November ballot.

The Caring 4 Denver campaign needed about 4,700 signatures and turned in more than 10,000.

“The success of our signature drive shows that people across the county have the power to help our communities thrive,” said state Rep. Leslie Herod, D-Denver, one of the leaders of the campaign. “Mental health and addiction challenges affect all of us, regardless of demographics, and all of us can make a difference by voting for this measure in November.”

The 0.25 percent sales tax would support mental health and addiction services, raising $45 million annually.

The city’s current total sales tax is 7.65 percent, counting local, state, transit and cultural facilities faces.

The measure is one of several that could ask Denver voters and others across the state to approve tax hikes for schools, transportation, new schools and other local needs.

(Correction: The sales tax proposal no longer has a 10-year limit, as it was originally proposed.)