SULLIVAN COUNTY — Voters in Sullivan County will head to the polls June 23 for just a handful of primary elections.

The deadline to register to vote in the primary is June 13. Applications must be received by the Board of Elections by that date.

Ballots will vary by party under New York’s closed primary system, which limits participation to registered party members. Democrats will vote in a statewide primary for state comptroller, while Republicans will vote in primaries for Congress in the 19th District and State Senate in the 51st District. Unaffiliated voters are not eligible to participate.

The Democratic primary for state comptroller features three candidates.

Thomas P. DiNapoli, the incumbent, is seeking another term as state comptroller, a position responsible for auditing government spending and managing the state pension fund. His record includes growing the state pension fund to $291.4 billion, establishing a fiscal stress monitoring system for local governments and conducting audits that have led to arrests and recovery of taxpayer funds.

Drew Warshaw, a former Port Authority official and affordable housing executive, is running on a platform focused on lowering costs. His proposals include a tax cut for working New Yorkers funded through changes to Wall Street fees, creating what his campaign describes as the largest affordable housing fund in the nation, accelerating the return of unclaimed funds and divesting state investments from fossil fuels.

Raj Goyle, a former legislator and attorney, is campaigning on four core proposals: fighting utility rate hikes, divesting state investments from fossil fuels, divesting from foreign bonds and increasing investment in affordable housing.

In the Republican primary for the 19th Congressional District, two candidates are seeking the party’s nomination. The district includes all of Broome, Chenango, Columbia, Cortland, Delaware, Greene, Sullivan, Tioga and Tompkins counties, and parts of Otsego and Ulster counties.

Peter Oberacker, a state senator, is seeking the Republican nomination in the 19th Congressional District. His campaign emphasizes economic development, support for local businesses and addressing costs facing upstate communities.

Alexander Portelli is running on an economic platform that includes reducing taxes, expanding domestic energy production and reducing federal spending, along with proposals related to trade policy, foreign aid and federal agencies.

The Republican primary for the 51st State Senate District also features two candidates competing for an open seat vacated by Peter Oberacker, who is running for Congress. The district includes all of Delaware, Schoharie, Sullivan and Otsego counties, and parts of Broome, Chenango and Ulster counties.

Terry Bernardo, a Sullivan County legislator, is focusing her campaign on lowering taxes, supporting small businesses and agriculture, reducing government spending and increasing transparency.

Christopher W. Tague, a current state assemblyman, has emphasized agriculture, rural communities and cost-of-living issues in his campaign and legislative work.

The winner will face Democrat Michele Frazier, who is unopposed for her party’s nomination.

Several major races will not appear on the primary ballot because they are uncontested or will be decided in the general election. That includes the 100th Assembly District, where Assemblywoman Paula Kay is listed as uncontested for the Democratic nomination.

Polls will be open from 6 a.m. to 9 p.m. on Primary Election Day, June 23. Polling locations are assigned by election district, and voters are encouraged to confirm their site in advance.

Early voting will be held June 13 through June 21 at two locations: the Sullivan County Government Center, 100 North St., Monticello, and Sullivan County Public Health, 50 Community Lane, Liberty. Early voting hours are 9 a.m. to 5 p.m. on June 13, 14, 15, 17, 19, 20 and 21, and noon to 8 p.m. on June 16 and 18.

Polling locations can be found at www.sullivanny.gov/Departments/Elections/VotingTimes or by calling the Sullivan County Board of Elections at 845-807-0400.

Primary elections typically draw fewer voters than general elections, meaning a relatively small number of ballots can determine party nominees for key races.