Martin O'Malley was born in Washington, D.C., and lives in Baltimore. O'Malley earned a bachelor's degree from Catholic University and a law degree from the University of Maryland.
He got his first significant political experience in 1982, while still attending Catholic University. O'Malley worked for Gary Hart's presidential campaign, and later as state field director for Barbara Mikulski in 1986 when she was elected to her first term in the U.S. Senate.
He ran for a City Council seat in 1990 and lost by 44 votes. A year later he was elected to the council and in 1999 was elected mayor. He won a second term four years later.
He was elected governor in 2006.
O'Malley and his wife, Catherine, have four children.
Martin O'Malley, a Democrat, had a difficult 2012 legislative session after setting an ambitious agenda that included proposed tax increases for transportation funding, upgrades for sewage treatment plants and efforts to cut an ongoing $1.1 billion budget deficit in half.
The gas tax proposal failed amid high gas prices, and the regular 90-day session in Annapolis ended in April with the embarrassing last-hour collapse of a revenue package in the Democratic-controlled General Assembly. The package was required to avoid about a half billion in cuts that Democrats hoped to avoid.
That left O'Malley hoping to have a special session to finish the job, but a hang up over a push to expand gambling by the Senate president complicated the overall picture on whether a consensus could be reached.
The regular session was a rare and strange ending for a governor who has broad budgetary powers defined in the state's Constitution. O'Malley's initial budget proposal ended up going through significant changes by the House and Senate. The two chambers incorporated an income tax increase on people who make more than $100,000 a year that O'Malley had not proposed. In the end, negotiations over differences between the two chambers bogged down, and the revenue package unraveled in the session's final hours.
The collapse gave fresh fodder to Republican critics who say O'Malley, who is chairman of the Democratic Governors Association, is preoccupied with building a national image outside of Maryland instead of handling the business of governor.
On a bright note for O'Malley, his push to legalize same-sex marriage squeaked through the House of Delegates, allowing the governor to sign legislation after a bill had failed in the chamber the year before. However, even that O'Malley victory will likely have to withstand a statewide vote in November, because opponents are expected to get enough signatures to put the matter on the ballot. Polls show state residents are split on the issue.
The O'Malley administration succeeded in moving forward with building on a framework to establish a health insurance marketplace where individuals and small businesses can purchase coverage under exchanges required under federal health care reform laws.
O'Malley, who is in his second term and is term limited, also succeeded in getting more money to fight pollution in the Chesapeake Bay. A doubling of the state's "flush tax" on sewer bills from $30 a year to $60 a year passed the General Assembly. The money is used to make upgrades at sewage treatment plants.
However, another O'Malley environmental initiative to develop offshore wind failed for the second year in a row, even after it was significantly scaled back.
Another setback came when an O'Malley administration proposal to help foster public-private partnerships on big projects like roads and public buildings also died.
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Martin O'Malley is not seeking re-election in 2014.
(Last updated by The Associated Press on June 24, 2014.)