Tom Arnold I'm NOT Voting For Roseanne

11/6/2012 5:00 AM PST

Tom Arnold -- I'm NOT Voting For Roseanne

EXCLUSIVE

It's still too early to call ... but it looks like Roseanne will NOT be the next President of the United States ... and her ex-husband Tom Arnold is partly to blame.

Of course, Roseanne claims to be a serious candidate to be the next leader of the free world ... running as the nominee of the Peace and Freedom Party.

In case you haven't followed her campaign, here's a summary -- she hates both Democrats and Republicans and REAAALLLLLY wants to legalize marijuana. That's pretty much it.

But her ex-hubby Tom Arnold tells TMZ ... she just hasn't earned his vote -- saying, "I'm voting for Obama, but for God's sake let Roseanne have her pot ... she's 60."

REMINDER -- Don't forget to vote today ... or Sophia Bush will be ashamed of you.


6:30 AM PT -- Roseanne isn't getting much help from her old castmates either.

We spoke to Michael Fishman -- who played DJ on "Roseanne" -- who tells us, "[Obama] is a very qualified choice."