|Preceded by||David Christopherson|
|Succeeded by||riding dissolved|
|Occupation||Real estate agent|
Marsales was born and raised in Winnipeg, moving to Hamilton, Ontario in 1972. She began working in real estate in 1974, first as an agent, and then beginning her own business, Judy Marsales Real Estate Ltd., in January 1988. In 1991, she became the first woman president of the Metropolitan Hamilton Real Estate Board. In 1996, president of the Hamilton and District Chamber of Commerce. She was appointed to the Hamilton Port Authority in 2001.
In the 2003 provincial election, Marsales won the riding. The seat was formerly held by NDP David Christopherson who had stepped down to enter the City of Hamilton mayoral race. During the campaign, she faced New Democrat Roy Adams and Progressive Conservative, Doug Brown. She won by just over 2,000 votes.
As a rookie MPP, Marsales proposed an anti-spam measure as private member's bill in May, 2004, the province's first, and was made a member of the legislature's economic affairs and finance committee. She was passed over in the cabinet reshuffle of July 2005, but in March 2006 was made parliamentary assistant to the Minister of Economic Development and Trade. That appointment lasted less than a month. She was then appointed as parliamentary assistant to the Minister of Small Business and Entrepreneurship.
Marsales had been expected to seek re-election in the reapportioned riding of Hamilton Centre against NDP incumbent Andrea Horwath. However, a story ran in the Toronto Star on July 12, 2007, indicating Marsales had instead decided to retire from provincial politics. She is currently the broker of record at Judy Marsales Real Estate in Hamilton, Ontario.
- "Marsales the right choice for Grits". Hamilton Spectator, The (ON). February 17, 2003. p. A11.
- "Judy Marsales: Realtor seeks enjoyment and challenge in 20-year career". Hamilton Spectator, The (ON). May 8, 1995. p. B8.
- "Looking for new growth: 1996 president of Hamilton chamber eyes arts members". The Hamilton Spectator. March 5, 1996. p. C8.
- "New directors appointed to port authority". The Hamilton Spectator. April 27, 2001. p. A8.
- "Liberals woo Kelly for Hamilton West; City councillor meets with aide to McGuinty". Hamilton Spectator. January 4, 2003. p. A6.
- "The Vote: Hamilton West". Hamilton Spectator, The (ON). September 3, 2003. p. D2.
- "Summary of Valid Ballots by Candidate". Elections Ontario. October 2, 2003. Retrieved 2014-03-02.[permanent dead link]
- "Zombies and Spam; Canada drops to No. 5 on a Dirty Dozen list of junk e-mail nations, but the battle's far from won". Hamilton Spectator, The (ON). August 30, 2004. p. A14.
- "2004's tech rulings shaping lives, business Banner year for digital decisions". Toronto Star. December 20, 2004. p. C1.
- "Rookie MPP Marsales trying to promote Hamilton". Hamilton Spectator. February 12, 2005. p. 58. .
- "Reading the hand dealt local Liberal MPs". Hamilton Spectator. July 6, 2005. p. A02. .
- "Premier McGuinty appoints new parliamentary assistants". Canada NewsWire. March 6, 2006. .
- "Hamilton Liberal decides not to run". The Toronto Star. July 12, 2007. p. A14. .