The thought occurred to me recently that the Texas lieutenant governor Republican runoff has a direct impact on every one of the 31 men and women serving in the Texas Senate.

Lt. Gov. David Dewhurst is running against state Sen. Dan Patrick in the GOP runoff set for May 27. The winner will face state Democratic state Sen. Leticia Van de Putte this fall.

So, here’s the question: Who will Sen. Kel Seliger of Amarillo endorse in the Republican runoff? Maybe there’s another question: Should the Republican endorse anyone?

Here’s what I know — or think I know — about the principals involved.

Dewhurst and Seliger work well together. Dewhurst, as the presiding officer of the Senate, has given Seliger a key committee chairmanship, Higher Education. Seliger would like to chair the Education Committee when the 2015 Legislature convenes. Dewhurst would seem willing to grant Seliger his wish — if he is re-elected this fall.

Seliger and Patrick have a so-so relationship. I don’t think they’re enemies, although I believe Patrick is being pushed along and counseled by individuals and groups who aren’t particularly friendly to Seliger. Patrick would do away with the two-thirds rule in the Senate that requires two-thirds of senators to support a bill before it goes to a full vote; Seliger has told me he supports the two-thirds rule as it helps build a semblance of bipartisanship in the Senate.

The situation gets sticky, though.

Patrick is now considered a near-prohibitive favorite to win the runoff. A lot of pols and political watchers are writing Dewhurst off. He’s toast, they say. Key staffers have left his office, many of whom have returned to the private sector. It’s getting harder to remember that Dewhurst once was considered a shoo-in to be elected to the U.S. Senate seat when Kay Bailey Hutchison announced her retirement; then along came Ted Cruz to burst that bubble.

To whom should Seliger throw his support? Does he back the guy with whom he’s worked in the Senate, but who now looks like the loser in this runoff? Does he swallow hard and back the other guy with whom he’s had an OK relationship?

Or does he just remain silent until the smoke clears on May 27 and endorse whoever finishes first?

I’m thinking Seliger is going to wait this one out.