I'm a sucker for Mr. Firth. So I opened it.
The email was from activists pushing for instant runoff voting. And apparently the British actor has signed on (along with John Cleese, Stephen Fry, Helena Bonham-Carter and others) to support the British version of preferential voting known as "alternative vote" or AV.
Here's what their website says:
"The referendum is a once in a generation opportunity to change our clapped out politics for good. I’ll be voting Yes," says Colin Firth, who has recently won a Bafta and a nominee for the Academy Awards for his role as King George VI in the King’s Speech.
Meanwhile, the US campaign has created its own Oscar related way to promote this style of voting: