Political insiders are well aware of the history between Sam Sullivan and Christy Clark.

In 2005, Clark wanted to become mayor of Vancouver and announced her intention to seek the NPA nomination.

But then city councillor Sam Sullivan pulled off an upset, narrowly defeating Clark and going on to beat Jim Green in the general election.

Before the 2013 election, close Clark supporter and friend Lorne Mayencourt wanted to be the B.C. Liberal candidate in Vancouver–False Creek.

But he was denied by Sullivan, who went on to win the general election against the NDP's Matt Toner.

Sullivan, as a former Vancouver mayor, might have been expected to be appointed as a cabinet minister in the B.C. Liberal government.

But Clark refused to do this, giving Vancouver only two cabinet positions. 

Sullivan toiled on the backbenches.

And when the election came, the B.C. NDP surprised many by nominating Morgane Oger, a transgender woman and chair of the district parent advisory council with the Vancouver school district.

With 82 of 93 ballot boxes counted, Oger has a 215-vote lead over Sullivan.

If he loses, it will likely be because Clark refused to put him in cabinet, depriving him of the spotlight and an opportunity to boost his name recognition.

At the moment, the B.C. Liberals and the NDP are tied in the seat count at 42. The Greens are leading in three other constituencies.

If the seats are tied, it's hard to determine if Clark will remain premier.

Wouldn't it be ironic if the cause of her downfall was her failure to appoint her old nemesis, Sullivan, to the executive council.

Update: With 90 of 93 ballot boxes counted, Sam Sullivan has opened up a 417-vote lead over Oger in Vancouver-False Creek.