No. There are enough people who are voting without understanding who or what they are voting for. Making it mandatory will just make that worse. I do think civics should be mandatory in all high schools though. That should give those coming up on voting age a better understanding of what thy are voting on.
Absolutely not. First it would force someone to do what they don't want to do. More importantly, we have more than enough uninformed, ignorant, and honestly speaking, stupid people voting.