Making the primaries about the GOP base
I support both of these proposals and would also exclude Democrats from voting in a GOP primary. Iowa and New Hampshire have a tendency to lean left of the GOP base pushing candidates to the top who may not be that popular in the rest of the country. This year was somewhat of an exception as Ted Cruz managed to thwart the ethanol lobby and get the most votes despite his stand. Ethanol is a product that is unnecessary and one that I would not buy given a choice.