The nation's largest city has an ambitious plan to reduce emissions. The next mayor could make or break its success.

We interviewed eight of the leading candidates for New York City mayor about their experience, their plans for the city and their sometimes contentious bagel orders. Here’s what they said.

Voters in the Democratic mayoral primaries are able to rank their top five candidates, but are not required to fill all five slots. If a candidate gets over 50% first-choice votes, they win. But if not, the candidate with the fewest votes is eliminated as votes are counted in subsequent rounds.