No, here's the thing: First, where the Hell are you getting "65%" of non-Trump supporters from? The supporters of Trump are completely in his suit pocket. They are not being swayed by public opinion polls, his past liberalism, or GOPe consultants, and they will not vote for any other Republican should the GOPe pull any shenanigans in Cleveland.
The other candidates in the race are simply fighting for VP or cabinet positions.
I will tell you how I get approximately 65% He is only drawing about 35% support. This election has evolved into either being for Trump or against Trump. No matter whom the 65% vote for, they have rejected Trump.