Table:
text: United States House of Representatives elections, 1860
Pennsylvania
Pennsylvania
District Incumbent Party First_elected Result_
Pennsylvania 22 Robert McKnight People`s 1858 Re-elected Republican gain
Pennsylvania 23 William Stewart People`s 1856 Retired Republican gain
Pennsylvania 24 Chapin Hall People`s 1858 Retired Republican gain
Pennsylvania 25 Elijah Babbitt People`s 1858 Re-elected Republican gain

Question: In the 1860 United States House of Representatives election, which was elected first, is the lowest that has an incumbent by William Stewart in Pennsylvania?