Whoever wins thus would continue to be the nation's only Congressman of Puerto Rican descent.

I was the only Congressman who was devastated.

He was known to help interns and others with finding jobs and other resources, and he may have been the only Congressman who used a laundromat.

Mr. Gingrich, the only Republican Congressman from Georgia, barely beat his Democratic opponent in the last election.

But, as far as anyone can tell, he remains the only Congressman to have called himself "the Ollie North of Ireland."

Henry Cheatham was the only black Congressman at the time and never gave a speech while the House considered the bill.

He was the only sitting Congressman to be reportedly killed by the Soviets during the Cold War.

Vermont has the nation's only independent Congressman; Maine has one of only two independent governors.

He was defeated by Representative Tim Johnson, now the state's only Congressman.

Mr. Levy, the only Republican Congressman to lose in a primary for re-election this year, has not conceded the election.