My actual guess is she feels tainted by the supposed anti-abortion message of ‘Juno’ and wants to let everyone know shes not a closet right-winger.
It always amazes me when people run away from conservatism. Look at Patricia Heaton….a big time conservative who not only had one hit tv show, she is working on her next one already. You can be conservative in Hollywood and still be a success. It always stunned me when I see actors and actresses become liberal (especially if they grew up in the Mid-West) for no other reason then taxes. Why would you want to pay 60 percent of your movie profits to the federal government and then add state taxes which in California are not cheep. That part always was a mystery to me. Heck even if you make 20 million a film and end up with 7 million to me is a rip off.
No mistaking her politics. She is your garden variety leftist Canadian movie star.