City code prohibits the use of public office facilities to promote or oppose political campaigns.
As for handing out invitations, the ethics office was unable to comment, but clearly the move didn't seem to raise any red flags for them. And it shouldn't. It would be one thing if Wills was doing a mailing on the public dime, but she's not. She's using her status as an elected politician to influence her colleagues. And as we understand it, that's her fricking job.