She began her career as a broadcast journalist, hosting a show on WDAS and often covering politics. She also started two non-profit organizations: the Anti-drug and Alcohol Crusaders, which offers programs for children whose parents are struggling with addiction, and the African American Female Entrepreneurs Alliance, which focuses on small business development. She worked on Barack Obama's presidential campaign during the 2008 election, traveling as far as Montana to work for the campaign. Davidson announced her candidacy for the Pennsylvania House of Representatives after longtime Republican incumbent Mario Civera was elected to the Delaware County Council. Civera eventually resigned his state House seat, and Davidson defeated Republican school board member Maureen Carey in the general election. She is the first Democrat, first woman, and first African American to represent the 164th district. Davidson assumed office on January 4, 2011.
Controversy
On October 28, 2016, Davidson was evicted from her campaign office in Lansdowne, Delaware County. The landlord filed suit demanding $2,796.77. He was awarded the judgement by a district judge in Upper Darby. Davidson filed a countersuit that was ultimately dismissed by the court. Davidson was charged in 2018 for two accidents while using a taxpayer-funded vehicle. The story went national after yc.news announced charges had been filed against Davidson for crashing her taxpayer-funded vehicle while leaving a political fundraiser February 3, 2018 in Concord Township, Delaware County. After further investigation, yc.news discovered Davidson was involved in a second accident one month prior on January 11, 2018 where Pennsylvania State Police informed the media outlet that Davidson had fled the scene of the crash. Shortly after the news broke, it was picked up by Philly.com and distributed nationally. According to the Associated Press, Davidson was driving under a suspended license on all accidents involving the taxpayer-funded vehicle. On April 10, 2018, Pennsylvania State Representative Brad Roae and State Rep. Kristin Phillips-Hill proposed legislation to rid lawmakers of all state-lease vehicles, citing the two accidents Margo Davidson was involved in that year. Following the two accidents in her taxpayer-funded vehicle, yc.news released leaked documents on August 3, 2018 that indicated the Office of the Attorney General paid $12,000.00 to victims of a third accident but declined to make the documents public until after the primary election. The couple originally filed suit against the Commonwealth of Pennsylvania and Margo Davidson demanding $100,000.00.