Dubois was born in Pont-du-Chateaux in 1952, to French immigrants Marie Crow and Alan Sharquet. After both his parents died in 1960, he was taken in to his aunt's home. He took her surname Dubois.
Dubois graduated from law school in 1977 and practiced from 1978 to 1987. He ran for office as parliamentary representative for his province in 1986, pledging to "protect conservative ideals". He was the most popular candidate by a landslide, and served from 1987 to 1997, after which he returned to law practice. In 2004, he became the provincial judge in Chateaux. He held this post until 2007, when he was sworn in as Mayor of Pont-du-Chateaux, the capital of the province.
Dubois has been married to Gabrielle Pipper since 1980. They have four children together, Lucia, Guy, Pierre, and Eve.
He announced his intention to seek the Traditional Party of Nalatia's nomination on October 31, 2011, in the Nalatia presidential election, 2011. His campaign officially began the next day, November 1, 2011.
He was the clear forerunner in the Traditional campaign, always placing just ahead Alfonso Abotta in polls. He received the party's nomination on November 21, 2011.