My predictions for the final episodes of 24: Day 5

Jack will somehow figure out that Buchanan and Chloe and working together and start counting on them for support. More ex-CTU employees will start showing up to help, i.e. Curtis.

CTU/Homeland will find out what Jack knows and will start working with him to find Henderson.

The President will resign and somehow take the heat from the Chinese about Jack's faked death.

All remaining recurring characters will survive the end of the season. (Audrey might die, but I doubt it.)