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Democrats Sweep Off-Year Races as California Map Change Alters House Battlefield

High off-year Democratic turnout, with Trump off the ballot, exposed GOP weaknesses.

Overview

  • Abigail Spanberger won Virginia’s governorship and Mikie Sherrill won New Jersey by double-digit margins, with Democrats also flipping 13 seats in Virginia’s House of Delegates and sweeping the other statewide offices.
  • Zohran Mamdani, 34, was elected New York City mayor as the first Muslim to lead the nation’s largest city, running as a democratic socialist on a cost-of-living platform.
  • California voters approved a congressional redistricting measure expected to improve Democrats’ odds in key House contests ahead of 2026.
  • Exit polls and campaign messaging highlighted affordability as the top issue, as Democrats tied Republican opponents to Trump’s policies and the ongoing government shutdown.
  • Republicans pointed to turnout gaps without Trump on the ballot, with JD Vance acknowledging mobilization challenges, while Democrats debated centrist versus progressive strategies for scaling wins next year.