[7] He also was a three-term lawmaker in the New Hampshire House and in leadership roles for Congressmen Vic Fazio (D-California) and Rush Holt (D-New Jersey).
[1] After graduating from college, Maviglio served three terms as an elected member of the New Hampshire House of Representatives and ran a variety of campaigns.
[1][9][10] Maviglio served as field coordinator of New Hampshire Asks, a group devoted to making health care a major issue in the 1992 campaign.
The firm has worked for Californians for Retirement Security, a public employee union coalition that opposes pension cuts, the Environmental Defense Fund, the Natural Resources Defense Council, Water Foundation, AT&T, Tesla, Californians Against Waste, the California Recycling Coalition.
[19] That year, he served as the spokesman for the No-on-23 campaign backed by a coalition of environmental, labor, health and progressive business groups in California.
[24] He also led efforts to defeat Tim Draper's “Six Californias” ballot measure and another proposed initiative to divert funds from the state's High-Speed Rail project to build more dams in 2016.
In June 2020, Maviglio gained some notoriety as the landlord of a building on Swann Street in Washington, D.C. which was rented by a man, Rahul Dubey.
During the evening of June 2, 2020, Dubey opened his home to shelter demonstrators protesting police brutality in the wake of the murder of George Floyd.