Here is a woman who voted in the recent presidential election from an ambulance.
She was upset that she would not get to vote as she was being transferred between
medical facilities. The ambulance staff stopped by her voting location and the
voting staff there brought out a portable voting machine for her.
She was just short of her 90th birthday (and has since made it!)

There are many places where people cannot vote.
Or where they don't really have choices, where "voting" is window-dressing.
Or where even trying to vote can get you injured or even killed.

I scanned this photo that was given to her.