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Story summary
- Betting markets give a 33% chance that Congress will split, with Republicans keeping the Senate and Democrats taking the House.
- RealClearPolling generic congressional voting polls show Democrats at 48.5% and Republicans at 42.9%.
- In primaries, GOP candidates have largely rallied behind President Donald Trump’s preferred nominees, while progressive Democrats backed by Mayor Zohran Mamdani defeated incumbents in New York.
