JD Vance wins Iowa caucus but loses New Hampshire primary in 2028

Griffin’s opposition to Vance and establishment GOP preference for Rubio create a headwind for Vance’s campaign. Iowa’s conservative base may still favor Vance, but New Hampshire’s moderate electorate could swing to Rubio with Griffin’s backing.

event · Prediction Market

Implied probability (Yes)

60%

Closes

2028-02-25

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