[6] Bronin has served as an officer in the U.S. Navy Reserve, and was deployed to Afghanistan and assigned to the Anti-Corruption Task Force.

[10] Bronin was born in Westchester County, New York and completed high school at Phillips Exeter Academy in New Hampshire before he attended Yale University as an undergraduate.

During the first term of President Barack Obama's administration, Bronin served in appointed positions at the U.S. Department of the Treasury.

He first served as Senior Advisor to his former boss, the Deputy Secretary of the United States Treasury Neal Wolin.

[13] Before running for mayor, Bronin joined the Governor Dannel Malloy's administration as general counsel in January 2013.

[22] Following the primary victory, he was endorsed by Connecticut Governor Dannel Malloy and Senators Richard Blumenthal and Chris Murphy.

[4] Although he pledged that he would serve out his full term as Mayor of Hartford, in December 2017, Bronin formed an exploratory committee to run for Governor of Connecticut in 2018.

[30] He faced challenges in the Democratic primary from former Mayor Eddie Perez, first elected in 2001 but who resigned from office in 2010 after being convicted on corruption charges,[31] and Connecticut State Representative Brandon McGee.

They were TV entrepreneur J. Stan McCauley, a Democrat who was cross-endorsed by the Hartford Republican Town Committee and will appear on the Republican line in the general election; Aaron Lewis, president and CEO of The Scribe's Ink publishing service; and Giselle “Gigi” Jacobs, who owns a cleaning company, Sister Soldier Environmental Services.

[38] In a message to friends, they stated that they are "planning to separate and to begin moving toward a divorce, in a collaborative, loving, mutually supportive process."