Five men are set to stand on a debate stage tonight in Houston.

Two of them are likely to unsheathe the long knives to use on each other.

A third man, the frontrunner, also is going to be a target.

Candidates No. 4 and 5?  I just hope they get to get a word in edge-wise.

Sens. Ted Cruz and Marco Rubio want to elbow each other out of the way to become the Republican Party “establishment” alternative to Donald J. Trump. For Cruz, the Houston debate has been called his “last stand,” or kind of an Alamo reference.

Rubio faces other obstacles, with polls showing him trailing Trump in his home state of Florida.

I continue to root for Ohio Gov. John Kasich, who’s the fourth-place candidate — but the one who exhibits the most executive and legislative government experience. He’s a grownup, but in this election cycle, political adulthood isn’t seen as a plus. Too bad.

The fifth man on the stage? I sense that this likely will be Dr. Ben Carson’s last bow on the national political stage.

So, let’s watch the debate tonight and see how much “blood” gets spilled.

My sense is that it’s going to be a serious spectator-friendly event.