This article is part of the Debatable newsletter. You can sign up here to receive it Tuesdays and Thursdays.

On Tuesday, millions of voters in 14 states and American Samoa headed to the polls in what may prove to be the most important day in the Democratic presidential primary. But what happens if voters remain split among four contenders tomorrow? It’s possible — perhaps even likely — that none of them will win a majority of the 3,979 pledged delegates needed to clinch the nomination on the first ballot.

That could trigger a contested convention in July, a potentially chaotic and caustic process that Democrats haven’t had to undertake since 1952 and that some fear could pave the way to President Trump’s re-election. How would a contested convention work, what would it mean for the party, and can it be avoided? Here’s what people are saying.