sentences:  Wisconsin voters elected Potter to the United States House of Representatives in 1856 and he won re-election twice.Thus, Potter served in the 35th through the 37th Congresses (1857 to 1863).Potter received his nickname in 1860, as a result of an aborted duel with Virginia Congressman Roger A. Pryor after Illinois Congressman (and abolitionist) Owen Lovejoy's remarks concerning the 1837 murder of his brother Elijah Lovejoy.