Updated, 9:50 a.m.

Good morning on this sparkling Tuesday.

It’s primary Election Day.

Here’s a friendly reminder to head to the polls today to cast your ballot in the 2017 Democratic primaries, where New Yorkers will be voting for mayor, City Council, borough president, Brooklyn district attorney and more.

Here’s what you need to know.

Who? Here’s a guide to all the candidates, created by the New York City Campaign Finance Board.

What? The winners in the primaries will be the parties’ nominees in the general election in November.

When? The primaries are today — from 6 a.m. to 9 p.m. — and you can browse the full election schedule here.