Wanted: Dead or Alive (1958)

S1E24 Secret Ballot

Randall's former army comrade, Ned Easter, is campaigning for mayor in a town plagued by corruption under Mayor Barney Pax and his brother, Sheriff Steve. The Pax brothers resort to violence, disrupting Ned's rallies to thwart fair competition. Ned's wife, Carole, discreetly calls on Randall to support Ned in case trouble arises, wanting to keep her actions a secret from him. Coincidentally, Randall has a wanted poster featuring Steve, who has been notorious for "shooting up half of Colorado."