vacant thereafter. President pro tempore: David Atchison (D), until May 5, 1850 William R. King (D), from May 6, 1850 House of Representatives Speaker: Howell Cobb (D), elected December 22, 1849, after 63 ballots Democratic Caucus Chairman: James Thompson Members This list is arranged by chamber, then by state. Senators are listed by class, and representatives by district. Skip to House of Representatives, below Senate Senators were elected by the state legislatures every two years, with one-third beginning new six-year terms with each Congress. Preceding the names in the list below are Senate class numbers, which indicate the cycle of their election. In this Congress, Class 1 meant their term ended with this Congress, facing re-election in 1850; Class 2 meant their term began in the last Congress, facing re-election in 1852; and Class 3 meant their term began in this Congress, facing re-election in 1854. Alabama 2. Benjamin Fitzpatrick (D), until November 30, 1849 Jeremiah Clemens (D), from November 30, 1849 3. William R. King (D) Arkansas 2. William K. Sebastian (D) 3. Solon Borland (D) California 1. John C. Frémont (D), from September 10, 1850 (newly admitted state) 3. William M. Gwin (D), from September 10, 1850 (newly admitted state) Connecticut 1. Roger S. Baldwin (W) 3. Truman Smith (W) Delaware 1. John Wales (W) 2. Presley Spruance (W) Florida 1. David Levy Yulee (D) 3. Jackson Morton (W) Georgia 2. John Macpherson Berrien (W) 3. William C. Dawson (W) Illinois 2. Stephen A. Douglas (D) 3. James Shields (D), until March 6, 1849 James Shields (D), from December 3, 1849 Indiana 1. Jesse D. Bright (D) 3. James Whitcomb (D) Iowa 2. George Wallace Jones (D) 3. Augustus C. Dodge (D) Kentucky 2. Joseph R. Underwood (W) 3. Henry Clay (W) Louisiana 2. Solomon W. Downs (D) 3. Pierre Soulé (D) Maine 1. Hannibal Hamlin (D) 2. James W. Bradbury (D) Maryland 1. Reverdy Johnson (W), until March 7, 1849 David Stewart (W), from December 6, 1849, until January 12, 1850 Thomas Pratt (W), from January 12, 1850 3. James Pearce (W) Massachusetts 1. Daniel Webster (W), until July 22, 1850 Robert C. Winthrop (W), from July 30, 1850, until February 1, 1851 Robert Rantoul Jr. (D), from February 1, 1851 2. John Davis (W) Michigan 1. Lewis Cass (D) 2. Alpheus Felch (D) Mississippi 1. Jefferson Davis (D) 2. Henry S. Foote (D) Missouri 1. Thomas