His website http://www.douggutro.com/
Here's his video of the announcement: https://www.youtube.com/watch?v=cvPfB25Mmes
Quincy Sun: Gutro, Mahoney Challenging Koch For Mayor
Mayor Thomas Koch – who is expected to seek a fifth term this fall – will have at least two challengers as City Councillor Doug Gutro and School Committeewoman Anne Mahoney said Monday that they will run for mayor this fall.Gutro will officially announce his entrance into the race Tuesday at 5 p.m. He has served on the Quincy City Council for 13 years, 10 of those representing Wollaston and Quincy Center as the Ward 5 councillor.
Mahoney – who was re-elected to a third term on the school committee in 2013 – challenged Koch for mayor in 2011.
Koch was uncontested for a fourth term in 2013.
Gutro and Mahoney’s entrance into the race could trigger a political scramble not seen at the local level for years. School Committeeman Dave McCarthy is expected to run for Gutro’s open at large seat. That would create an open School Committee seat since McCarthy’s term is up this fall.
A Koch-Gutro-Mahoney race will create a preliminary election that is tentatively set for Tuesday, Sept. 22. The final election is Nov. 3. This will also mark the first city election voters cast ballots for mayor who will serve a four-year term.
This is a developing story. More coverage in this week’s Quincy Sun.