It's popular to imagine that atheists all share common views on various political issues. Since this assumption is frequent with those who think the same thing about all 'true' Christians, perhaps this is not a surprise - but it's still wrong. The only thing all atheists share in common is an absence of belief in the existence of gods. Beyond that, atheists may hold any position on any political issue, and in fact atheists often disagree strongly in political debates.
Read Article: Atheists & Political Issues: What Do Atheists Believe About Political Issues?