Rocky Hill - Citing his social justice advocacy and service in the General Assembly, members of the 29,000-strong AFT Connecticut are supporting State Rep. Gary Holder-Winfield’s candidacy for the State Senate. The labor federation’s Executive Committee voted in favor of a formal endorsement and last week informed active and retired members of affiliated local unions residing in the 10th Senate District. Holder-Winfield is seeking to succeed New Haven Mayor Toni Harp, who vacated the senate seat last month, in a February 25 Special Election.