Monday was the deadline for mailing ballots for the Nov. 4 election, according to Boulder County. Voters who haven’t mailed theirs yet should instead vote in person at any Voter Service and Polling Center, or use one of the county’s 24-hour drop boxes to ensure their ballot is counted.

There are drop box and voting center locations in Erie, Lafayette, Louisville and Superior. A full list of ballot drop-off and polling locations across Boulder County is available on the county’s election website.

Lafayette

• Voter Service & Polling Center: Southeast County Services Hub, 1755 S. Public Road

• 24-hour drop box: Lafayette Public Library, 775 W. Baseline Road

Louisville

• 24-hour drop box: Louisville Recreation Center, 900 W. Via Appia Way

Erie

• 24-hour drop box: Meadowlark School, 2300 Meadow Sweet Lane, staff/bus parking lot off Front Range Road at Laramie Lane (south side of building)

Superior

• 24-hour drop box: Superior Town Hall, 124 E. Coal Creek Drive

Voters can still register to vote at any Voter Service and Polling Center, where staff can issue replacement ballots, assist voters with disabilities and offer Spanish-language services. A current photo ID, such as a Colorado driver’s license, is required to vote in person, according to the county.