All four of Prince Edward Island's ridings staying Liberal red on a federal election night is not an unusual result, but this time it wasn't a guaranteed result by any means. 

The Liberal Party of Canada's three Island incumbents, plus one rookie candidate, eventually won seats on Parliament Hill when all the votes were counted Monday night and early Tuesday. 

In what ended up being a two-party race between the Liberals and Conservative Party of Canada, a trend that was largely reflected across t…