[2] In 1978, he earned a bachelor of science degree in psychology from Ramapo College in Mahwah, New Jersey.
Attending Pennsylvania College of Chiropractic, Eustace earned a doctorate in 1985 and became a licensed chiropractor.
Eustace's assembly campaign won the support of the Gay & Lesbian Victory Fund.
Eustace was narrowly re-elected after a recount confirmed that he had beaten Republican Joseph Scarpa by 35 votes in a contest that drew approximately 52,000 voters.
[9] In December 2017, he announced that he would introduce a bill to make clean water an inalienable right in the state for all citizens.