Elections New Brunswick says 1,336 people voted during two days of advance polling while 109 people have voted at the returning office.
Spokesman Paul Harpelle says six people who are vacationing in Florida have also requested ballots.
Those ballots must be returned to Elections New Brunswick before 8 p.m. Monday when the polls close.
Liberal Leader Brian Gallant is running for his party, while Jimmy Bourque is the Progressive Conservative candidate and Susan Levi-Peters is running for the New Democrats.
The byelection was called when former Liberal premier Shawn Graham quit politics after he was found to be in a conflict of interest over a $50-million loan guarantee his government gave to a construction firm in 2009.