A resident of Springfield, Massachusetts, he was elected as a Democrat to represent the 9th Hampden district.

He is a member of the Massachusetts Black and Latino Legislative Caucus.

[2][3] In October 2014, Tosado was endorsed by The Republican, which noted "As a native of Puerto Rico, Tosado understands the special concerns of Latinos and will bring that voice to Beacon Hill.

"[4] Tosado had previously been an unsuccessful candidate in the 2011 Springfield, Massachusetts mayoral election.

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