It’s beginning to look as though the Republican Party primary presidential field is going to endure another serious thinning out … maybe soon.

The South Carolina primary is coming up. Donald Trump continues to lead the pack — for the life of me I don’t know how.

Ted Cruz is in the mix. So is Marco Rubio.

That leaves the three also-rans, one of whom I had high hopes could resurrect his campaign.

Ben Carson should leave the race. John Kasich — my favorite Republican and possibly my favorite candidate in either party — needs to score well if he’s going to continue. Jeb Bush? I fear that he’s done, too.

That will leave us with three men running for the GOP nomination.

Two of them are serious, although none of them — for my money — should be the nominee.

It’s looking like one of them will survive the dogfight.

It’s been said that the primary system is a grueling battle that determines whether the “fittest” of the candidates will survive. I’ve called it a form of political natural selection.

This election cycle is proving to be a test of conventional wisdom, which used to suggest that the fittest candidates were those with the most experience, the most knowledge, and who are the most articulate in explaining their philosophy.

That’s not the case these days.

The fittest candidates are those who scream the loudest and who appeal to the fears of an electorate that has been told they have plenty to fear.