Yep, I've had to on various occasions. The most memorable was when I voted for Nixon in '72 ('73 election). They had JUST lowered the voting age from 21 to 18 and I was 20 at the time. I was also in the military. I remember it was a bit of a cluster-fuck and TBH, I can't remember the details. It's all a blur now, but it finally happened.

For the 2008 election, I was a long-haul OTR truck driver and voted absentee.

The same in 2012 when I was constantly in and out of the hospital for back surgeries, etc.