1844 | | Incumbent retired.New member elected.Whig hold.Incumbent then resigned early, leading to a special election. | nowrap | |} Indiana Elections were held August 2, 1847, after the March 4, 1847 beginning of the term, but before the House first convened in December 1847. |- ! |- ! |- ! |- ! |- ! |- ! |- ! |- ! |- ! |- ! |} Iowa Elections to the 29th Congress Elections for the new state were held October 26, 1846. |- ! rowspan=2 | | colspan=3 | New state | | New seat.New member elected October 26, 1846.Democratic gain.Winner (Leffler) was later elected in the to the next term, see below. | rowspan=2 nowrap | |- | colspan=3 | New state | | New seat.New member elected October 26, 1846.Democratic gain.Winner (Hastings) would not be a candidate for the next term, see below. |} Elections to the 30th Congress Elections were held August 2, 1847, after the March 4, 1847 beginning of the term, but before the House first convened in December 1847. |- ! | colspan=3 | New seat | | New district.New member elected.Democratic gain. | nowrap | |- ! rowspan=2 | | Shepherd Leffler | | Democratic | 1846 | Incumbent re-elected. | rowspan=2 nowrap | |- | S. Clinton Hastings | | Democratic | 1846 | | Incumbent retired.Democratic loss. |} Kentucky Elections were held August 2, 1847, after the March 4, 1847 beginning of the term, but before the House first convened in December 1847. |- ! |- ! |- ! |- ! |- ! |- ! |- ! |- ! |- ! |- ! |} Louisiana Elections were held November 2, 1847, after the March 4, 1847 beginning of the term, but before the House first convened in December 1847. |- ! |- ! |- ! |- ! |} Maine Elections were held September 14, 1846. |- ! |- ! |- ! |- ! |- ! |- ! |- ! |} Maryland Elections were held October 6, 1847 elections were after the March 4, 1847 beginning of the new term, but still before the Congress convened in December 1847. |- ! |- ! |- ! |- ! |- ! |- ! |} Massachusetts Elections were held November 9, 1846. |- ! |- ! |- ! |- ! |- ! |- ! |- ! | Julius Rockwell | | Whig | 1844 |