|Elections in Pennsylvania|
Incumbent Republican Edgar Cowan, who was elected in 1861, was a candidate for re-election to another term, but was defeated by former Democratic Senator and former United States Secretary of War Simon Cameron, who had previously switched to the Republican Party. The Pennsylvania General Assembly, consisting of the House of Representatives and the Senate, convened on January 15, 1867, to elect a Senator to fill the term beginning on March 4, 1867. The results of the vote of both houses combined are as follows:
|Republican||Edgar Cowan (Inc.)||49||36.84|
- "U.S. Senate Election - 15 January 1867" (PDF). Wilkes University. Retrieved December 22, 2013.
- "CAMERON, Simon, (1799 - 1889)". Biographical Directory of the United States Congress. Retrieved December 22, 2013.
- Pennsylvania Election Statistics: 1682-2006 from the Wilkes University Election Statistics Project
| Pennsylvania U.S. Senate election (Class III)