When To Start Watching: Polls will close for the Louisiana Republican primary at 8 p.m. CDT (9 p.m. EDT). Results will begin to come in around 8:30 p.m. CDT. What's At Stake: Twenty of the state's 46 delegates are up for grabs Saturday, divided proportionately among all candidates who receive more than 25 percent of the vote in the state. Louisiana hosts a closed primary, meaning only registered Republicans may vote for the four candidates in the GOP contest.