Most of the mayoral candidates will be in Dorchester tonight for the Boston Teachers Union forum. Boston magazine contributing editor David Bernstein will moderate the forum, which starts at 7 p.m. inside the union hall at 180 Mt. Vernon St. The union has over 10,000 members. Meanwhile, on TV, three candidates – City Councillor At-Large John Connolly, Suffolk District Attorney Dan Conley and former state Rep. Charlotte Golar Richie – chat with Emily Rooney on “Greater Boston” in an interview taped this afternoon. The show airs at 7 p.m.

Starting tomorrow, there will be 12 days to the Sept. 24 preliminary.

MAILER MADNESS: Voters’ front porches will soon be groaning from the weight of mailers, if they aren’t already. In their mailer, District 5 Councillor Rob Consalvo’s campaign touts his family and says “only one candidate for mayor will have three children in the Boston Public Schools.” The front of it features the Consalvos in front of a school with their three children rushing past them. Golar Richie’s campaign has a new mailer targeting women voters, saying there are 174,733 women voters in the city and “This is our moment!” The back features a letter from Priti Rao, the head of the Mass. Women’s Political Caucus, and excerpts from an Aug. 25 Herald column by Howie Carr. The mailer left out the parts from Carr’s column where he described her fundraising as lackluster and added she is “not exactly dazzling them out there” on the campaign trail. Boston magazine’s Bernstein did note this morning, “[Golar Richie] has picked up $$ from Leslie Kirwan, Elise Cherry, JudyAnn Bigby, Maria Jobin-Leeds, Patrick Moscaritolo, & Jacquelyn Payne-Thompson… ...recent donors to [Golar Richie] include some of the Patrick admin folks she worked with -- whose absence from her donor rolls has been notable.”

NEW BARROS VOTER: John Barros’s campaign announced on Wednesday morning that he and his wife Tchintcia welcomed into the world Jeremiah Fidalgo Barros. He was born at 2:41 a.m. Wednesday, weighing 6.1 pounds.

The campaign later tweeted a picture of the family, with son John Jr..

Excited to welcome Jeremiah to the family! Thanks for all the well wishes! pic.twitter.com/tsEeihkrLG

— John Barros (@JohnFBarros) September 11, 2013

ROSS BRINGS LARGE THERMOMETER TO FIELDS CORNER: District 8 Councillor Michael Ross was in Dorchester’s Fields Corner neighborhood to highlight a plan to fight climate change. The Globe’s Wesley Lowery was there to capture the size of the thermometer:

On the trail: Mike Ross w/a thermometer on 95 degree day in Sept. talking climate change at Fields Corner #bosmayor pic.twitter.com/6o6BdS0aYc

— Wesley Lowery (@WesleyLowery) September 11, 2013

HERALD ENDORSES: The Herald's editorial board has endorsed District Attorney Conley and City Councillor At-Large John Connolly in the mayoral prelim. The paper also takes an unusual non-endorsement swipe at state Rep. Marty Walsh at the end, saying, "has given ample evidence that his loyalties remain with his union supporters, not with city taxpayers."