Yes, her candidate statement here (scroll down) definitely gives the impression that she wants the job:
http://www.ox.ac.uk/gazette/2014-201...ctions/#207427
I don't think the actual voting has started yet--just the registration of those who can cast votes.
[Edited to say: Yup, the site says "Registered voters will have the option of voting, either online or in person at the University Offices, from Friday, 22 May, until noon on Wednesday, 17 June (BST)."]