Forced to vote? Never. I abhor the "voter voter" bills - if people are too uneducated to find a voter registration office, they should not be allowed to vote.
I have heard stories of bus loads of street people arriving at a polling place, and get their instructions and enter the voting booth. They are rewarded with a $2 bottle of gin, a 40 ounce can, or something similar. My only wish is that these folks nvote exactly opposite of their instructions because they cannot read.
I read most of your posts here, Mr. Groundpounder. Thanks for sharing your finds.