SANTA FE, Tex. — One mile from the scene of the shooting that left 10 people dead at her school, Monica Bracknell, a senior at Santa Fe High School, approached Texas Gov. Greg Abbott in the lobby of Arcadia First Baptist Church here Sunday morning.

Her message was simple: The violence was not “a political issue,” she told Mr. Abbott, explaining to reporters afterward that schools needed to be safer but restricting the availability of guns was not the way to achieve it.

After the February rampage at Marjory Stoneman Douglas High School in Parkland, Fla., students there helped ignite the most successful push for action on gun control in decades in that state. There is little indication of anything similar in Texas, a place where guns are hard-wired into the state’s psyche, Republicans control virtually all the levers of power, and where the victims of Friday’s rampage in a conservative rural area are showing little of the anti-gun fervor that followed the Parkland shooting in a more diverse, suburban one.

In the wake of the tragedy, gun issues are likely to take on a new urgency in a few Texas political races, including Republican congressional districts that Democrats are trying to flip, but the debate is far more muted and dominated by support for gun rights than it had been in Florida post-Parkland.

“Florida is a swing state,” said Calvin Jillson, a professor of political science at Southern Methodist University in Dallas. “You start with the understanding that Florida is a purple state in which Democrats and Republicans are both competitive. Texas is a deep-red state, in which the Republican Party is in complete and total control. They don’t feel that partisan electoral heat.”

What played out instead was a reminder, as happened after 26 people were killed in a church shooting in Sutherland Springs, Tex., in November, that major gun violence often does not produce a backlash against guns. The differences in how the issue has played out in Texas and Florida illustrate just how hard it can be to establish a consensus on gun issues in America. For gun control advocates, what works in one part of the country does not work in others, even down to the vocabulary used. Some pro-gun Texans question the phrase “gun violence” and avoid using it, saying it is as arbitrary as talking about knife violence.

“People like to say on Facebook, ‘Oh, you shouldn’t be able to buy a gun,’” Ms. Bracknell told reporters at the church on Sunday, two days after police said a 17-year-old student used a shotgun and handgun, apparently belonging to his father, to kill 10 people, including a substitute teacher, Glenda Ann Perkins, whom Ms. Bracknell had known for years. “That kid was 17. He’s not able to buy a gun anyway. It’s not like a gun-law issue. This kid is obviously mentally unstable and he knew that there were flaws in the school system to get into the rooms.”

The differences between the fallout from the Florida and the Texas shootings begins with the communities where they occurred.