We will certainly see. Speaking of the mayor's race, McGinn and Murray now have another candidate to deal with:
http://www.carymoonformayor.com/
A city activist by the name of Cary Moon, who has been an advocate for the Seattle waterfront, is announcing her candidacy this morning. Moon's position paper, which you can find on her website in the "Vision" section, has no mention of any positions on proposed arena plans, but considering her background as a waterfront activist, I'm guessing she may be opposed to SoDo and more supportive of the KeyArena plans.
I do not see her chances as strong largely due to lack of name familiarity compared to McGinn/Murray, but we'll just have to see. She may be someone voters who aren't comfortable voting for the other two might look at, as her positions on other issues are relatively similar I think to the other two candidates from my read of them earlier.
There has been some discussion in local media the past few days of a so-called "mystery" candidate for the mayor's seat, and Ms. Moon appears to be that candidate. Should be interesting to see where she is on the arena, and I'd guess Daniels or someone else covering this will pin her down on that in due course.