How do you prepare to vote?

This was a reference to an older Jay Foreman video on this topic, wasn't found as funny as I'd hoped.

In all seriousness I look up candidates and try to find several sources discussing them to attempt to avoid biases from one source. I like to see how they've voted as a representative in the past (if they were one). For voting on propositions I will look up what it does, the supporting and critical arguments, and then who supports and who doesn't support it. That's usually how I go about it.