Certainly, where they're running determines their success. Absolutely.
We know that in part because right now, there's work—and this isn't my work, this is the work of Melanee Thomas at the University of Calgary, with Marc-André Bodet—that has shown that the “sacrificial lamb” hypothesis still holds in Canada. If we have no quotas or legislation, and barring any kind of different legislation, what often happens is that women will be placed in ridings in which they have less chance to win. Partly, I would argue, because of my work about women leaders, they're less competitive and so it's easier for women to step forward and be selected in those particular ridings. That's what's happening, yes.
As I would also point out, we can't always know which ridings are the ones in which the party's going to win. I think that's an important point we often forget about. When we do get those jumps in the representation of women, it is because the parties that didn't expect to win actually won. They nominated a lot of women in ridings that they didn't think they were going to take, and so you end up with a greater representation for women in that setting.