Conditional on Trump dying, being disqualified from running for president, or being incapacitated such that he can't run or is severely hampered from running and has to drop out, who will be the Republican nominee? This market is conditional on it happening before the nominee is chosen at the Republican National Committee, not before the committee begins.

If Trump drops out citing "health issues" but is still clearly capable of running if he really wanted to, that doesn't count. It has to be a case where it clearly was really the health problems that led him to drop out by preventing him from campaigning or making him incapable of performing his duties if he was elected president.