Election officials are raising concerns about the U.S. Postal Service's ability to handle this fall’s expected influx of election mail. But USPS say it’s ready to deliver the country’s ballots.

Wisconsin clerks will start to mail absentee ballots to voters who requested one on Thursday. They can also open up drop boxes.

The Maryland State Board of Elections completed the installation this week of 286 ballot drop boxes across the state. Voters can use any drop box to cast their mail-in ballots, which may arrive in homes as early as next week.

The drop box is located in the alley alongside the Finance Department's customer center, 100 N. Appleton St. The alley, though, is blocked with construction equipment — and will remain so through December — so voters cannot drive up to the drop box to deliver their ballot as they could in the past.

MILWAUKEE - Wisconsin clerks on Thursday, Sept. 19, will start mailing out absentee ballots to voters who requested one. Clerks can also open up drop boxes, although one sheriff is warning them not to.

Hundreds of thousands of mail-in ballots have been sent to Maryland voters, with more on the way, as the country rapidly approaches one of the most highly-anticipated presidential elections in American history.

By Thursday, all absentee ballots for those across Wisconsin who have already requested them will have been sent out.

The Maryland State Board of Elections completed the installation Wednesday of 286 ballot drop boxes across the state for the general election.

Massachusetts' top election official said his office is working with the US Postal Service prior to distributing mail-in ballots for the November presidential election, but recommended that voters use designated ballot drop boxes to return their ballots.