Here come the grenades.

They’re being lobbed at Texas state Sen. Kel Seliger, R-Amarillo, who is facing a GOP primary challenge from former Midland Mayor Mike Canon and Amarillo restaurant owner Victor Leal.

The live ammo is being tossed by Leal, who has approved a TV ad that accuses Seliger of being “liberal” and “corrupt.” Leal puts the two words together — in that order — at the end of his ad, which seems to equate liberal political views with corruption.

Seliger, meanwhile, is running hard on his own conservative credentials, proclaiming himself to be pro-local control, pro-life and pro-National Rifle Association.

As someone who plans to vote quite soon — my wife and I will be unavailable to vote on March 6, which is primary Election Day — I am taking a keener-than-usual interest in this race.

Just maybe Leal ought to take a deep breath before he airs this ad too many more times. I happen to remember the first time Leal ran for a legislative seat. It was in 2010. He wanted to succeed David Swinford, who retired from his House District 87 seat.

But here’s the deal: Leal had resided for many years in Randall County, which is not part of District 87. He then rented a house in Potter County, which falls within the legislative boundary. Questions arose about whether Leal was residing in the Potter County house.

I will not divulge whether I believe Leal actually lived in that Potter County residence. However, questions surrounding that messy residence matter can — and occasionally do — find their way back to the front burner.

Especially when politicians toss around words such as “corrupt.”