(Bloomberg) -- The U.S. Supreme Court said states can ensure that their members of the Electoral College vote for the presidential candidate who won the statewide balloting, resolving an issue that could affect the outcome of a tight election.

The unanimous decisions in cases from Washington and Colorado add a dose of predictability to the presidential election system heading into what could be a tumultuous November vote on Donald Trump’s re-election bid. The court rejected contentions that the Constitution gives presidential electors the right to vote as they please no matter who won the state’s popular vote.

QuickTake: Why the U.S. Has ‘Electors’ Who Choose the President

©2020 Bloomberg L.P.