Icarus_Mark yes they will. Malcolm has a winner's edit, along with Sarah. Ika has a good shot of making it very far. Natalie is an icon so wouldn't surprise me to see her win.
Well you have to remember Steven999 that no one even knows who's in the cast for BB19 yet because it hasn't even been revealed, so whether or not Natalie is even going to be in has yet to be determined. Malcolm having a winner's edit literally means nothing. Anyone can have a winning edit or quote, and some have been voted out pre-merge. I'm not saying Malcolm isn't capable of winning, but I highly doubt he will. As for Ika, BB Canada is Twist City. That show is a HUGE wild card, so even if she is in a good position now, we don't know if that'll last.
I can hope that I'm wrong in at least one of these, and if I am, you are entitled to say "I told you so", but my point is let's not jump the bullet and call anything out just yet.