Dozens of local offices are on the ballot in Tuesday’s Election Day for the Island.

The biggest race is for Suffolk County executive. Democrat Steve Bellone is seeking a third four-year term. Republican County Comptroller John Kennedy is challenging him, as is Libertarian candidate Greg Fischer, of Calverton.

Laura Gillen, who stunned the political world by becoming the first Democrat in more than 100 years to win the office of Hempstead town supervisor, is up for re-election. She's being challenged by Republican Receiver of Taxes Don Clavin in a race that's expected to be close.

Democratic Nassau DA Madeline Singas is seeking a second term. She's being challenged by Republican attorney Francis McQuade. 

Every county legislator in Nassau and Suffolk is up for re-election, plus there are supervisor races in all three towns in Nassau and seven of the 10 Suffolk towns.

Many Long Islanders have already voted. This year, New York joined more than 30 other states in allowing early voting.

In Nassau County, about 30,000 people cast ballots. Approximately 13,000 early Nassau voters were registered Republicans while 12,000 were registered Democrats. There was a smaller turnout in Suffolk with about 17,000 early voters. About 5,100 early Suffolk voters were registered Republicans and 8,500 were registered Democrats.

Analysts say it's unclear if those were new voters or people who would have voted on Tuesday anyway. They also say it's too early to tell which party may have benefited more from early voting.

The polls will be open Tuesday from 6 a.m. to 9 p.m.

News 12 Long Island has everything you need to be informed before you vote. Explore the candidates who will be on the ballot in our 2019 Voters Guide, watch candidates from key races debate in the News 12 studios and get complete coverage in our Island Vote section of News12.com.

Be sure to stay with News 12 on election night for race results and developments.