Alcee Hasting is only the 6th Federal Judge in U.S. history to be impeached, and the only impeached federal judge to later be elected as a congressman.
The following information is quoted from Wikipedia.
In 1981, Hastings was charged with accepting a $150,000 bribe in exchange for a lenient sentence and a return of seized assets for 21 counts of racketeering by Frank and Thomas Romano, and of perjury in his testimony about the case. He was acquitted by a jury after his alleged co-conspirator, William Borders, refused to testify in court (resulting in a jail sentence for Borders).
In 1988, the Democratic-controlled U.S. House of Representatives took up the case, and Hastings was impeached for bribery and perjury by a vote of 413-3. Voters to impeach included Democratic Representatives Nancy Pelosi, Steny Hoyer, John Conyers and Charles Rangel. He was then convicted in 1989 by the United States Senate, becoming the sixth federal judge in the history of the United States to be removed from office by the Senate. The vote on the first article was 69 for and 26 opposed, providing five votes more than the two-thirds of those present that were needed to convict. The first article accused the judge of conspiracy. Conviction on any single article was enough to remove the judge from office. The Senate vote cut across party lines, with Senator Patrick J. Leahy, Democrat of Vermont voting to convict his fellow party member, and Arlen Specter voting to acquit.
The Senate had the option to forbid Hastings from ever seeking federal office again, but did not do so. Alleged co-conspirator, attorney William Borders went to jail again for refusing to testify in the impeachment proceedings, but was later given a full pardon by Bill Clinton on his last day in office.
1. “Hastings Ousted As Senate Vote Convicts Judge”, The New York Times, October 21, 1989. Accessed April 10, 2008.