He was the president of John Esposito & Sons, Inc., a hardware and contractor supply business in Jersey City.
[3] In the Democratic primary, Esposito and school principal Frank R. Conwell defeated Hoboken attorney Andrew Batistich and incumbent Assemblyman Addison McLeon.
However, Democratic Hudson County Assemblyman David Friedland had also attempted to run for speaker as well despite allegations of corruption in the previous session.
At the time of the speaker vote, Esposito along with Friedland, David Wallace, and Joseph J. Higgins broke from their Democratic caucus to elect Republican Thomas Kean speaker for the session; Esposito would receive a committee chairmanship during this term in exchange for the Kean vote.
However, in 1977 with the unpopularity of Governor Brendan Byrne's income tax proposal in large force, Esposito and Miszkiewicz (despite having the Hudson County Democratic Organization support) were defeated by Thomas F. Cowan and Robert C.