When the majority of the court begins drafting its opinion on Mississippi’s ballots case, it’s clear that another popular practice will be firmly on their mind: Early voting.

The Supreme Court on Monday is hearing a case that has become part of a broad political battle over mail-in ballots and that could have major consequences for voters in November’s midterm elections.

The case could have implications for the midterm elections this November, when voters will decide which party controls the House and Senate.