Marco Rubio will be the Republican nominee in 2028

Ken Griffin’s endorsement of Marco Rubio over JD Vance signals a potential shift in GOP donor support. Griffin’s influence and past backing of Rubio could sway other establishment figures. Rubio’s deferential stance toward Vance may not hold if Vance’s campaign underperforms.

geopolitics · Prediction Market

Implied probability (Yes)

55%

Closes

2028-03-04

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