Voters in Missouri’s Third Congressional District should know well the two candidates running to replace retiring St. Louis Congressman Richard Gephardt. Republican Bill Federer ran against Gephardt twice, in 1998 and 2000. He says he wouldn’t have entered the race this year had Gephardt decided to run again. Federer calls his opponent, Democrat Russ Carnahan, the most left-wing of all the Democrats who crowded into the August primary. Carnahan rejects the assessment. The seat is open for the first time since 1976. It covers the southern portion of St. Louis and St. Louis County as well as all of Jefferson and Ste. Genevieve Counties.