(KRON) -- Former Rep. Barbara Lee has filed paperwork to run for Oakland mayor. According to a filing on the California Secretary of State website, Lee has filed campaign finance paperwork for a mayoral run this year. Lee, 78, chose not to run for re-election for the congressional seat in California's 12th district she held for the previous two years. As a congresswoman, Lee served for decades after first being elected to California's 9th district in 1998. California governor proposes $322B budget with no deficit She held that seat until 2013 when she was elected to represent the 13th district which she represented until 2023. Lee lost a failed bid for the U.S. Senate seat long held by the late Sen. Dianne Feinstein. While Lee has not yet officially announced her campaign, filing paperwork with the secretary of state implies the Democrat is mulling a run to fill the office left vacant following the recall of unpopular Oakland Mayor Sheng Thao. After a tumultuous two years in office, Thao was recalled by a majority of Oakland voters in last November's election. A spokesperson for Lee told KRON4.com that she would be making an announcement about her decision later this week. In addition to Lee, 13 people have filed papers signaling a potential run for Oakland mayor, according to a list posted on the city's website. Kevin Jenkins becomes Oakland 3rd mayor in less than a month On Monday, the Oakland City Council elected councilmember Kevin Jenkins president, elevating him to the role of interim mayor ahead of the upcoming special election on April 15. Jenkins, who was first elected to the council two years ago, takes the reins from Nikki Fortunato Bas who had been interim mayor since Thao stepped down last month. Bay City News contributed to this report.