After a year of clerking, Brian became a prosecutor in Arlington County. He worked cases ranging up to rape and murder. Brian Moran left the prosecutor’s office after 7 years and ran for the House of Delegates in 1995 at the suggestion of Mark Warner.

After being elected, Moran served on the Transportation, Courts of Justice, and Health Welfare and Institutions Committees. He is a repeat winner of Mothers Against Drunk Driving Legislator of the Year, a recipient of the Tech-10 award from the Northern Virginia Technology Council, and a ‘Friend of Business’ awardee from the Fairfax Chamber of Commerce. Moran also was named the 2006 Legislator of the Year for the Virginia Sheriffs Association. Moran resigned his seat on December 12, 2008 to pursue the Virginia governorship full time.

In 2001, Moran was elected to chair the House Democratic Caucus succeeding Creigh Deeds who was elected to the Virginia State Senate. Since then, Democrats have added seats in every consecutive general election and now hold 44 of the chamber’s 100 seats. Moran spent the better part of 2006 and 2007 traveling the state to recruit and support House candidates for the 2007 election, when all 100 Virginia House of Delegates seats were on the ballot (as in every odd-numbered year).

Moran formed a fundraising committee to campaign for Governor in 2009.[6] Mame Reiley served as director of Virginians for Brian Moran, helping Moran in his election bid for Governor, from 2007 to 2009. Moran ultimately lost the Democratic nomination for governor to Creigh Deeds, who received more than twice as many votes as Moran. Moran came in third after Terry McAuliffe.
On December 4, 2010, Moran was elected Chair of the Democratic Party of Virginia, defeating Peter Rousselot of Arlington County.

(source: http://en.wikipedia.org/wiki/Brian_Moran)