He triple majored in political science (honors), Middle East studies/Arabic, and international studies, and graduated as the valedictorian of his divisional college.

[2][self-published source] After several years at the congregation, Lewis stepped down to become a founding member of Out MetroWest, a nonprofit organization providing services for at-risk LGBT youth.

During Lewis' tenure as executive director, Out MetroWest worked with over 700 teens, focusing on supportive counseling and community education.

[5] He ran for the Democratic nomination on a progressive platform, pledging his enthusiastic support for an increased minimum wage, stronger environmental protections, and a renewed commitment to diversity and community life.

He also received the support of several federal officeholders, including congresswoman Katherine Clark and senators Elizabeth Warren and Edward Markey.

[13] On February 22, 2017, Lewis received his committee assignments, which local press praised as "consistent with the platform he campaigned on.