1876–77 United States Senate elections
Senators were elected over a wide range of time throughout 1876 and 1877, and a seat may have been filled months late or remained vacant due to legislative deadlock.[6] Following the resignation of Simon Cameron, the Pennsylvania General Assembly convened on March 20, 1877, to elect a new Senator to fill the vacancy.Incumbent governor Richard Coke defeated former Texas Supreme Court justice John Ireland on the third ballot.[3] Appointed incumbent Samuel Price and challengers Frank Hereford and Henry S. Walker, three prominent state Democrats, fought for the party's nomination over seven ballots and three sessions, without much movement in any direction.On January 26, with the Democrats unable to make a nomination, legislative Republicans broke the deadlock by throwing their support to Hereford on the floor.