How Chris Evans voted compared to someone who believes that the federal government should give the immigration minister the power to revoke the citizenship of people who have dual nationality (that is, are also citizens of another country) if they take part in certain terrorism-related offences

Division Chris Evans Supporters vote

28th Feb 2006, 3:55 PM – Senate Motions - Australian Citizenship - Refusing and stripping citizenship

absent Yes

How "never voted on" is worked out

Normally a person's votes count towards a score which is used to work out a simple phrase to summarise their position on a policy. However in this case Chris Evans was absent during all divisions for this policy. So, it's impossible to say anything concrete other than that they have "never voted" on this policy.