Early voting to open for the June primary election. Here's what you need to know.

Early voting begins Saturday for several congressional primary races across Long Island, as well as for state comptroller.

Early voting will be held for nine days in advance of the primary on June 23. Voters also have the option to cast an absentee ballot or early vote by mail. The winners advance to the general election in November.

Here’s what you need to know:

When is early voting in Nassau?

Saturday, 9 a.m. to 6 p.m.

Sunday, 9 a.m. to 6 p.m.

Monday, 7 a.m. to 6 p.m.

Tuesday, 10 a.m. to 7 p.m.

Wednesday, 10 a.m. to 7 p.m.

Thursday, 9 a.m. to 6 p.m.

Friday, 9 a.m. to 6 p.m.

June 20, 9 a.m. to 6 p.m.

June 21, 9 a.m. to 6 p.m.

When is early voting in Suffolk?

Saturday, 10 a.m. to 6 p.m.

Sunday, 10 a.m. to 6 p.m.

Monday, 10 a.m. to 6 p.m.

Tuesday, 7 a.m. to 3 p.m.

Wednesday, 7 a.m. to 3 p.m.

Thursday, Noon to 8 p.m.

Friday, Noon to 8 p.m.

June 20, 10 a.m. to 6 p.m.

June 21, 10 a.m. to 6 p.m.

Where are early voting sites?

The Nassau County Board of Elections uses 26 locations for early voting. Suffolk County has 28 early voting sites across 10 towns. The early voting sites are different from polling places on Election Day. Registered voters can cast a ballot at any early voting site in their county. A full list of early voting locations is available on each county’s BOE website, suffolkcountyny.gov/Departments/BOE and nassaucountyny.gov/566/Board-of-Elections.

What are the mail-in ballot deadlines?

Registered voters can request a mail-in ballot by downloading an application at elections.ny.gov/request-ballot. An application to receive the mail-in ballot must be received by the board of elections no later than 10 days before the election.

A completed ballot must be postmarked no later than June 23 and be received by the board of elections no later than June 30.

What are the absentee ballot deadlines?

Applying for an absentee ballot can be done several ways, including online at elections.ny.gov/request-ballot, as well as in person at a county board of elections. Applications requested by mail must be received no later than 10 days before the election. An application can also be received one day before the election if picking up the absentee ballot in person.

Absentee ballots must be postmarked by June 23 and received by June 30. The ballots can be dropped off at early voting sites, brought to a poll site by 9 p.m. on June 23 or to the county board of elections office by 9 p.m. on June 23.

Am I required to bring a state-issued ID to a poll site? 

State law does not require anyone bring their ID to verify their identity to vote. Usually, poll workers match a registered voter's signature with what they have on record. First-time voters, however, must bring some form of ID if a local board of elections was unable to verify their identity during the registration process. Other alternatives could be a utility bill with one's name and current address. 

When is the deadline to register to vote for the primary?

The deadline to register ahead of the primary is June 13. To register in New York, a person must be a U.S. citizen, 18 years old, a resident of the state and the county, city or village for at least 30 days prior to the election. A person must also not be registered to vote anywhere else, be in prison for a felony conviction or be deemed mentally incompetent by a court, according to the state BOE.

How can voters confirm their registration?

To confirm a voter registration, visit voterlookup.elections.ny.gov and enter last name, first name, date of birth and ZIP code to verify party registration and Election Day poll site.

May I vote early, then change it on Primary Election Day?

No, once a ballot is cast during early voting, there can be no change on Primary Election Day, based on state law.

What are the hours of voting on Primary Election Day?

On June 23, voting is held from 6 a.m. to 9 p.m. statewide.

What if voters encounter problems at the polls?

The Office of the New York State Attorney General operates an Election Protection Hotline at 866-390-2992. An online complaint form is also available at ag.ny.gov/individuals/voting-rights.