Hmm, that's difficult. I only really have three 'ships for Due South!

One True Pairing Ship: Fraser/either Ray
Canon Ship: Diefenbaker/Food!
"If this happens I'll stab my eyes out with a spork" Ship: Fraser/Francesca
"You are one sick bastard" Ship: Uhh. I briefly thought Fraser/Maggie until they turned out to be brother and sister?
"I dabble a little" Ship: ...Fraser/his hat
"It's like a car crash" Ship: Fraser/Ray K/Ray V
"Tickles my fancy but not sold just yet" Ship: Ray K/Ray V
"Makes no canon sense but why the Hell not" Ship: Fraser/Elaine
"Everyone else loves it but I just don't feel it" Ship: Fraser/Meg (since that's canon and I never felt it)
"When all is said and done" Ship: Fraser/Ray K