The deadline for Tucson voters to send their ballots in the mail is quickly approaching.

City officials are urging residents to mail their ballots no later than Thursday to ensure they reach the City Clerk’s Office by the Nov. 5, 7 p.m. deadline.

The city mailed out ballots for its council races and propositions about two weeks ago. This year, Tucsonans will elect council members for Wards 3, 5 and 6 and vote on two propositions: the expenditure base adjustment and Plan Tucson.

Voters who fail to mail their ballots in time may drop them off on Election Day at the following locations:

Department of Housing and Community Development, 310 N. Commerce Park Loop.

Morris K. Udall Regional Center, 7200 E. Tanque Verde Road.

Donna R. Liggins Recreation Center, 2160 N. Sixth Ave.

William Clements Recreation Center, 8155 E. Poinciana Drive.

El Pueblo Senior Center, 101 W. Irvington Road.

Parks and Recreation Administration, 900 S. Randolph Way.

Tucson City Clerk Elections Center, 800 E. 12th St.

All locations will be open from 6 a.m. to 7 p.m.

In addition, the City Clerk Elections Center is also open now through Nov. 5 from 8 a.m. to 5 p.m. Monday through Friday where voters can turn in their ballots or pick up a replacement before Election Day.

So far, the City Clerk’s Office has received and verified 27,050 of the ballots that have already been returned, which represents a 12 percent turnout. And it is in the process of verifying an additional 8,000 received ballots.

Historically, turnout over the past five elections involving these three wards has ranged from a low of 16.9 percent in 1993 to a high of 37 percent in 1997.

Contact reporter Darren DaRonco at 573-4243 or Follow on Twitter @DarrenDaRonco