She campaigned in favour of replacing first-past-the-post with the alternative vote as a system for electing MPs in a 2011 referendum and is a supporter of the Labour Campaign for Electoral Reform. She is also a republican, believing that Britain should have a democratically elected head of state. She has stated that she is a social democrat, not a socialist. In 2014 Scottish independence referendum, Izzard led a campaign encouraging Scottish people not to vote for independence, and said the rest of the UK would feel a "deep sense of loss" if Scotland were to leave.