In countries without mandatory voting, if voting is more inconvenient for certain groups than for others, the latter will be over-weighed in the election. With mandatory voting, casting a valid vote is no more and no less inconvenient than spoiling the ballot, so that’s not an issue—all eligible people who ceteris paribus would prefer, no matter how slightly, to vote will do so.
(Unlike wedrifid I’m not in a country with mandatory voting, BTW.)
In countries without mandatory voting, if voting is more inconvenient for certain groups than for others, the latter will be over-weighed in the election. With mandatory voting, casting a valid vote is no more and no less inconvenient than spoiling the ballot, so that’s not an issue—all eligible people who ceteris paribus would prefer, no matter how slightly, to vote will do so.
(Unlike wedrifid I’m not in a country with mandatory voting, BTW.)