Chretien's looong goodbye

Spotted in this Canadian Press story:

SHAWINIGAN, Que. (CP) - Jean Chretien's long political goodbye stretched on Friday with a return to his hometown - likely his final official visit there as prime minister.

"This is probably the last time I participate as prime minister at an event like this in my riding," Chretien told about 100 businesspeople gathered for the official opening of an industrial energy complex in Shawinigan, Que....

I don't wish Mr. Chretien ill but "probably the last time"?!? What "probably" is there? Perhaps Paul Martin should hire a food taster and some bodyguards