This market will resolve to YES if Elon Musk states that he voted for the Republican nominee or otherwise indicates very strong support for his candidacy before the end of 2028. If Elon Musk does not do this, this market will resolve to NO.

Examples for clarity:

Elon tweeting "everyone should go vote for Vance" (assuming Vance is the republican candidate) would be enough evidence to resolve YES

Elon tweeting "Kamala Harris is the worse candidate" or "I refuse to vote for Kamala Harris" (assuming she is the dem candidate) or supporting something that the republican candidate says would not be enough to resolve YES, since they are not direct advocacy for voting for the republican candidate.