State Senator Stanley C. Rosenberg today endorsed Treasurer Steven Grossman in his bid to become Massachusetts’ next governor.
The nod from Rosenberg, an Amherst Democrat who has claimed sufficient votes in the state Senate to become its next president, is significant because of his expected leadership position and resulting influence over other state senators.
“We have a talented field of candidates, but what distinguishes Steve is his lifetime of leadership fighting for the values of economic fairness and equality of opportunity,’’ Rosenberg said in a post on Grossman’s website.
“When Steve speaks about his goals for the Commonwealth, he can proudly cite his proven record of turning vision into reality,’’ he continued.
A Rosenberg aide confirmed the endorsement.
Although endorsement season has not begun in earnest among the five Democrats hoping to succeed Governor Deval Patrick, at least one has been announced: US Representative Katherine Clark endorsed Attorney General Martha Coakley’s bid for governor earlier this month.
The state Senate’s current president, Therese Murray, has not endorsed in the gubernatorial race, but backed Coakley in her 2010 bid for US Senate.
The other Democrats currently running are former Obama administration health care official Donald M. Berwick; Juliette Kayyem, a former state and federal homeland security official; and Joe Avellone, an executive at a bio-pharmaceutical research firm.
Republican Charlie Baker, his party’s 2010 nominee for governor, faces tea-party aligned Shrewsbury resident Mark R. Fisher in the GOP primary.
Two independent candidates have also launched bids for governor: Evan Falchuk, an attorney and former business executive; and evangelical christian pastor Scott Lively.
Venture capital investor Jeffrey S. McCormick, an independent, is seriously considering a run as well.