The field of contenders for Joseph Lieberman’s ’64 LAW ’67 U.S. Senate seat just got a little less crowded.

U.S. Rep. William Tong announced on Tuesday that he will withdraw from contention for the Democratic nomination for this fall’s Senate race, leaving U.S. Rep. Chris Murphy and former Secretary of the State Susan Bysiewicz ’83 still in the running.

“This was my first statewide campaign,” Tong said at the press conference. “I do not expect it will be my last.”

At the conference, Tong joined Governor Dannel Malloy and Lt. Gov. Nancy Wyman announcing their endorsement of Murphy.

A March poll by Quinnipiac University found Tong trailing far behind both Murphy and Bysiewicz, receiving only four percent of respondents’ support and losing in a hypothetical matchup against Republican challengers Linda McMahon and Chris Shays. Murphy, meanwhile, is the only candidate who would defeat every challenger from both parties, and posted the race’s highest fundraising total.