I urge my Australian readers (and others, if interested) to look at the new Reason Makes a Difference site, which attempts to inject a reason-based approach into grassroots political lobbying here in Australia. It's at an early stage yet, but I expect that its campaigns will appeal to many secular people ... and probably to many reasonable religious people as well.
Its first and current campaign relates to the trial of secular ethics classes as an alternative to taxpayer-funded religious education in NSW state primary schools. (In case you're wondering it's in favour of the trial ... while the Sydney churches have come out strongly against it.) You might be persuaded to support this campaign (there's a link to help you email NSW politicians about the issue).
Reason Makes a Difference has chosen as its philosophical basis a declaration made by the International Ethical and Humanist Union back in 2002. I can quibble about almost any such declaration or manifesto, but I have no significant problems with this one, which also has the virtue of brevity ... and it's not like we're being asked to sign our names to it.
Do have a look. This site could provide a great contribution to public debate.