Only six percent of registered Democrats turned out Tuesday to vote in primary races. All of the races were uncontested.
In Princeton, 9,172 residents are registered as Democrats.
State Assembly candidate Andrew Zwicker received 564 votes and Maureen Vella received 521 votes in the Democratic primary for Assembly.
Mercer County Executive Brian Hughes, who is seeking a fourth term, received 562 votes in the Democratic primary.
County Clerk Paula Sallami Covello, who is running for re-election, received 551 votes.
In the Mercer County Freeholder Democratic primary, Ann Cannon received 545 votes, Pat Colavita received 536 votes, and Sam Frisby received 540 votes.
In the uncontested Princeton Council Democratic primary, Heather Howard received 557 votes and Lance Liverman received 546 votes.
About seven percent of registered Republicans turned out for the GOP primary.
In Princeton, 2,097 residents are registered as Republicans.
State Assembly candidate Jack Ciattarelli received 131 votes in the Republican primary for Assembly and his runningmate, Donna Simon, received 127 votes.
County executive candidate Lisa Richford received 131 votes in the Republican primary.
County clerk Republican candidate Susan Bagley received 132 votes.
In the Mercer County Freeholder Republican primary, Tony David received 127 votes, Ira Marks received124 votes, and Jason Lee DeFrancesco received 124 votes.
In the Republican primary for Princeton Council, Lynn Irving received 142 votes and Kelly DiTosto received 136 votes.