He calls himself Bob Seton and says he comes from Texas.
6 seconds sound clip from the Dark Command (1940) movie soundboard.
You can hear this line at 00:26:33 in the Blu-ray version of the movie.
Quote context
[...]
- Our town has grown to a size where we need a marshal.
- Be sure you elect a man who can grow with the town.
- And now, friends, I present Mr. Cantrell's opponent.
- He calls himself Bob Seton and says he comes from Texas.
- I know nothing more about him. In fact, I had a tough time finding out that much.
- I gotta get outta here. I'm sick.
[...]