From the uncut version of the KDKA interview (about 9:33 in):
Marty Griffin: Your political advisories, here's what they're going to say tomorrow. The mayor waited until after the election to do this. This thing's been falling apart for two years.
Luke Ravenstahl: Well, it hasn't been falling apart for two years. But we did wait. Uh, Erin and I, we've worked through this for, uh, almost a year now. Uh, we decided to wait, uh, because of those political reasons. We didn't want to mix this personal issue into the midst of a political campaign. We wanted to handle it on our terms.