No, I don't. They are conflated all on their own. There is a distribution for everything. As a rule, people who are atheists tend to be left leaning.You mean except for the fact that atheists tend to be leftists?This OP asks a stupid question. Nobody can tell whether someone is an atheist, agnostic, or theist of some sort. One could just as well post the question of why so many people who declare themselves as believing in a supreme being support the death penalty.
The way the term "atheist" is slung around these days, you'd think that people walked around with signs declaring their thoughts on the subject. It appears to be an attempt at insult used by jackasses from certain cults who declare themselves, and only themselves, to be "believers."
You continue to conflate religion and policy/political questions. You can have no idea what the religious views are of people whom you describe as "leftists," as if this term is somehow dirty. Many people who are Christian, Jewish, and Muslim also oppose the death penalty, as well as adherents of other religions.
I still can't figure out how you determine who is an atheist, an agnostic, or a believer.
And yes, socialism is evil as it destroys the spirit of man.