In the special US Senate primary on Tuesday, local Democrats voted overwhelmingly in favor of US Representative Edward J. Markey over fellow congressman Stephen F. Lynch, while Republicans threw substantial support behind Gabriel Gomez over his rivals, Michael J. Sullivan and Daniel B. Winslow, for their party’s nomination. The town saw a 26 percent voter turnout. In the Democratic primary, Markey received 82 percent of Wellesley’s votes. In the Republican primary, Gomez received about 63 percent, compared with Sullivan’s 21 percent and 16 percent for Winslow. With the local results reflecting the vote totals statewide, Markey and Gomez will face off in the special election June 25 to fill the seat left by John F. Kerry when he was named US secretary of state. For more information on the election and voting, contact the town clerk’s office at 781-431-1019, ext. 2250.