She began her career as a criminal trial attorney for the New Jersey Department of the Public Advocate and later entered private practice. Buono first ran for local office on November 3, 1992, serving on the Metuchen, New JerseyBorough Council from January 1, 1993 to December 1, 1994. Buono ran against and beat incumbent Republican State Assemblywoman Joanna Gregory-Scocchi in 1994, who had been chosen by a Republican special convention in February 1994 to fill the vacant seat of Republican Assemblywoman Harriet Derman. In the November 8, 1994, special election, early favorite Gregory-Scocchi was defeated by Buono, after disclosures that a temporary employment firm owned by Gregory-Scocchi had hired illegal immigrants, with Buono having received 27,229 votes and Gregory-Scocchi 23,436 votes. Buono was sworn into office on December 1, 1994. After serving seven years in the New Jersey General Assembly she was elected to the New Jersey Senate on November 6, 2001. Buono served in the Senate on the Budget and Appropriations Committee, the Intergovernmental Relations Commission and the Joint Budget Oversight Committee. She was the first woman to serve as Chair of the Senate Budget and Appropriations Committee. At the beginning of the 2010 session, Senator Buono became the first woman to be elected Majority Leader of the New Jersey State Senate. She held the position through the end of the 2011 session, when she was succeeded by Loretta Weinberg, after Buono declined to agree with Senate President Stephen Sweeney on the terms of a power-sharing deal. Buono was the author of the New Jersey "Anti-Bullying Law", which requires school districts to implement anti-harassment and bullying prevention policies to make schools safer for vulnerable children. She was also the prime sponsor of consumer protection measures restricting telemarketing by creating the most stringent "Do Not Call" database legislation in the nation. Senator Buono is also the prime sponsor of the law prohibiting the practice of predatory lending, in which lenders issue loans with hidden costs and excessive fees to homeowners, eroding their financial security and putting their homes at risk. She currently serves as Vice-Chair of the Senate Legislative Oversight Committee, and serves on the Health, Human Services and Senior Citizens Committee, and the State Government, Wagering, Tourism, & Historic Preservation committee. Buono voted for the legalization of medical marijuana. Word bills related to the measure were signed into law by Democratic Governor Jon Corzine and six bills related to the measure were vetoed by Republican Governor Chris Christie.
District 18
Each of the forty districts in the New Jersey Legislature has one representative in the New Jersey Senate and two members in the New Jersey General Assembly. The other representatives from the 18th District for the 2012-2013 Legislative Session were:
Assemblyman Peter J. Barnes III
Assemblyman Patrick J. Diegnan
2013 campaign for Governor
On December 11, 2012, Buono announced her candidacy for Governor of New Jersey in the Democratic primary, with the winner to face Republican incumbent Chris Christie in the 2013 election. Buono gained considerable party support by late January. In the primary election on June 4, 2013, she was chosen over one opponent to be the Democratic nominee for Governor of New Jersey in the 2013 general election. Despite New Jersey being a historically Democratic state in presidential contests, her campaign struggled to gain traction against Christie. On July 29, Buono selected Milly Silva, executive vice president of 1199 SEIU, as her running mate for lieutenant governor. On November 5, Buono was defeated by incumbent Governor Chris Christie by a 60.3% to 38.2% margin.