The Republican party is done. A large segment is so angry about the cram-down of leftist policies that they will support an authoritarian who (sort of) promises to wage war on the left (shades of 1932). In addition, we can expect that blocking Trump's nomination will lead many of his supporters to be disillusioned with the Party. Nominating Trump will lead to a guaranteed loss and a continuance of the left's attack on civilization. The only compensation for those of us who despise politics in general is that it will not be the candidate who is characterized as "free market" who is wreaking havoc.
As Ludwig von Mises wrote:
A man who chooses between drinking a glass of milk and a glass of a solution of potassium cyanide does not choose between two beverages; he chooses between life and death. A society that chooses between capitalism and socialism does not choose between two social systems; it chooses between social cooperation and the disintegration of society. Socialism is not an alternative to capitalism; it is an alternative to any system under which men can live as human beings.
Unfortunately, in the guise of the two major parties, we are offered only socialism--the national socialism that was supposedly destroyed in World War II.