Of course, another major reef upon which many a political career has been smashed is the extra-marital affair — U.S. Rep. Mark Souder, R-Ind., being the latest example. Souder, first elected from his Fort Wayne-area district in 1994, admitted Tuesday to a “relationship” with a part-time staffer and said he will leave Congress at the end of the week. In a statement Souder said although his family would stand behind him in his re-election bid this fall, he chose resignation rather than put them through more pain. “The error is mine and I should bear the responsibility,” Souder said of his costly fling. “I wish I could have been a better example.” So do his constituents, no doubt. Certainly, Souder’s withdrawal opens up this year’s race in Indiana’s 3rd District. Gov. Mitch Daniels could call a special election, but that’s unlikely given the proximity to the November mid-term elections. Otherwise, within 30 days precinct chairmen across the 3rd District will meet to choose a replacement nominee. Souder’s fall is disappointing and, again, testimony to the pitfalls of power. At least he’s not one of those politicians who insists on healing himself in office.