1856–57 United States Senate elections
Senators were elected over a wide range of time throughout 1856 and 1857, and a seat may have been filled months late or remained vacant due to legislative deadlock.The convention nominated King for Secretary of State, but he was defeated by Joel T. Headley in a four-way race.When State Senator Sickles received votes, the same objection to his eligibility was raised as was in 1833 regarding Nathaniel P. Tallmadge.William Bigler was elected by the Pennsylvania General Assembly to the United States Senate.[4] The Pennsylvania General Assembly had previously convened on February 13, 1855, for the regularly scheduled Senate election for the term beginning on March 4, 1855.Upon the expiration of incumbent James Cooper's term on March 4, 1855, the seat was vacated and would remain vacant until William Bigler's election in January 1856.The results of the vote of both houses combined are as follows: The Class 1 election in Pennsylvania was held on January 13, 1857.[6] The Pennsylvania General Assembly convened on January 13, 1857, to elect a Senator to serve the term beginning on March 4, 1857.