Sanchez is the second-ranking Democrat on the Homeland Security Committee.
He is chairman of his human resources subcommittee and is the second-ranking Democrat on the Select Committee on Aging.
Senator Chris Dodd, the committee's second-ranking Democrat, is his party's chairman.
Mr. Cranston was the Senate's second-ranking Democrat for more than a decade; he did not seek re-election to the job of majority whip last year.
He also has a seat on the influential Banking Committee, but he is only the second-ranking Democrat on that panel.
By the time of her retirement from Congress, she was the second-ranking Democrat on the committee.
As a majority leader, Kessler was the second-ranking Democrat in the state House.
He was also the second-ranking Democrat on the Agriculture Committee.
"We've heard a lot of talk about revolution the past eight months," said Mr. Bonior, the second-ranking Democrat in the House.
The majority leader, Richard A. Gephardt of Missouri, the second-ranking Democrat, leans toward opposing the agreement.