New York City Mayor Zohran Mamdani’s early endorsement, combined with backing from Senator Bernie Sanders and the NYC Democratic Socialists of America, has positioned Queens Assemblymember Claire Valdez as the clear frontrunner to succeed retiring Representative Nydia Velázquez in the June 23 Democratic primary for New York’s 7th Congressional District. Brooklyn Borough President Antonio Reynoso, endorsed by Velázquez and backed by the Working Families Party and Queens Democrats, trails in trader consensus amid a contest framed as a test of mayoral influence versus established progressive networks. Valdez holds a modest fundraising edge, while City Council Member Julie Won and lower-profile candidates have not shifted the race dynamics. The closely divided left-leaning electorate and upcoming primary date continue to define probability assessments reflected in current market pricing.