According to the RCP Average, 73% of Likely Republican Voters want someone other than Trump.
The question is, as Bush, Huckabee, Paul, Kasich, Christie, Graham, Jindal, Santorum and Pataki all inevitably drop out, will their supporters switch to Trump or one of the other survivors? That is what will determine who wins.
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And the rest have a larger percentage.
Anti % 73 .. Trump 78 .. Carson 90 .. Rubio 93 .. Cruz 94 .. Bush 94 .. Fiorina 97+ .. the rest of the field