Choosing a U.S. senator in New Mexico is a momentous decision — after all, our state sends leaders to Washington, D.C., and tends to keep them there. An open seat is a rare occurrence, which is why the retirement of U.S. Sen. Tom Udall in 2020 is a singular opportunity.

That’s true both for the candidates seeking to fill Udall’s consequential shoes and for voters selecting a senator. Given our history, whoever wins likely will serve a spell — GOP Sen. Pete Domenici was in D.C. for more than three decades, just to name one of several long-serving senators from New Mexico.

Democrat Ben Ray Luján, who has represented the 3rd Congressional District capably for more than a decade, is seeking a promotion to the upper chamber, running against former television weatherman Mark Ronchetti on the GOP side and Libertarian Bob Walsh.