Incumbent re-elected. | nowrap | |- ! | William Davidson | | Federalist | 1818 | Incumbent re-elected. | nowrap | |- ! | Felix Walker | | Democratic-Republican | 1817 | Incumbent re-elected. | nowrap | |- ! | Lewis Williams | | Democratic-Republican | 1815 | Incumbent re-elected. | nowrap | |} Ohio Ohio elected its members October 13, 1818. |- ! | William Henry Harrison | | Democratic-Republican | 1816 | | Incumbent retired.New member elected.Democratic-Republican hold. | nowrap | |- ! | John W. Campbell | | Democratic-Republican | 1816 | Incumbent re-elected. | nowrap | |- ! | Levi Barber | | Democratic-Republican | 1816 | | Incumbent lost re-election.New member elected.Democratic-Republican hold. | nowrap | |- ! | Samuel Herrick | | Democratic-Republican | 1816 | Incumbent re-elected. | nowrap | |- ! | Philemon Beecher | | Federalist | 1816 | Incumbent re-elected. | nowrap | |- ! | Peter Hitchcock | | Democratic-Republican | 1816 | | Incumbent lost re-election.New member elected.Democratic-Republican hold. | nowrap | |} Pennsylvania Pennsylvania elected its members October 13, 1818. |- ! rowspan=4 | | John Sergeant | | Federalist | 1815 | Incumbent re-elected. | rowspan=4 nowrap | |- | Adam Seybert | | Democratic-Republican | 18081814 1816 | | Incumbent retired.New member elected.Federalist gain. |- | William Anderson | | Democratic-Republican | 18081814 1816 | | Incumbent retired.New member elected.Federalist gain. |- | Joseph Hopkinson | | Federalist | 1814 | | Incumbent retired.New member elected.Federalist hold. |- ! rowspan=2 | | Levi Pawling | | Federalist | 1816 | | Incumbent lost re-election.New member elected.Democratic-Republican gain. | rowspan=2 nowrap | |- | Isaac Darlington | | Federalist | 1816 | | Incumbent retired.New member elected.Democratic-Republican gain. |- ! rowspan=2 | | James M. Wallace | | Democratic-Republican | 1815 | Incumbent re-elected. | rowspan=2 nowrap | |- | John Whiteside | | Democratic-Republican | 1814 | | Incumbent lost re-election.New member elected.Democratic-Republican hold. |- ! | Jacob Spangler | | Democratic-Republican | 1816 | | Incumbent resigned April 20, 1818.New member elected.Democratic-Republican hold.Successor also elected to finish the current term. | nowrap | |- ! rowspan=2 | | Andrew Boden | | Democratic-Republican | 1816 | Incumbent re-elected. | rowspan=2 nowrap | |- | William Maclay | | Democratic-Republican | 1814 | | Incumbent retired.New member elected.Democratic-Republican hold. |- ! rowspan=2 | | Samuel