He could give them twenty-one days to make major changes or he would switch his party affiliation.
That would leave the Republican party with about 10% of it’s registered voters in 60 days.
One elected, he owns them.
People in Congress would switch affiliations or be voted out the next time they come to bat.
The public has had it with the RNC.
They either get religion now, or they are out!
It is these kind of statements that make Trump supporters sound delusional. You might get AT MOST 30% of the party to leave. The idea that 90% would follow Trump is fantasy. IF that were the case, he would have already hit 1237, not be facing an open convention.