Wait a minute... Lefebvre is already a knight, whereas Hartigan has very little combat experience. Plus, depending on player choice, Lef could also be rich as hell, or Hartigan could be dead.
Oh my god. Lefebvre's probably going to win.
I think this might actually be an interesting choice though, since you can be friends with one and hate the other, befriend both, or hate both, and they both have different values.
Lefebvre for King!
Edit: Though I wonder if we are friends with both we can convince them to put their ambitions aside and support us for Grandmaster instead. Maybe using arguments like:
For Lefebvre: "You're shady as hell, and Hartigan was Hunter's best friend. They want someone with a 'clean' record who was on good terms with him. You don't stand a chance. But I have a better rep, also had a close relationship with Hunter, and you know I have a practical mind, so support me instead of yourself."
For Hartigan: "Lefebvre is a knight who participated in several key battles. No offense, but you yourself said you have not. They'll want someone with combat experience, so you don't stand a chance. I have an excellent service record, you know I'm an honorable man, and Hunter believed in me, so you should support me instead of yourself."