If not, go vote, then you can come back and read.
If/when yes, I have a question for you - does this appall you?
When I was working in Andalusia (LA*, not Spain), one of my co-workers was telling us, almost proudly, that when she'd changed her voter registration after getting married she used the office address because it'd be so convenient to vote. Our office was, I believe, within the city limits; the young lady in question lived two towns over. This means that she could vote for mayor, city council member, etc. for a city she didn't live in and couldn't vote for her county council member, mayor, school board... for where she DID live. I have no idea where the state legislative district boundaries are/were, but she may have been voting in the wrong ones for that, too. She seemed to only look at the convenience factor of voting closer to work. (BTW, she worked 7-4 and lived at most 45 minutes from work.) I was horrified, but not so much that I thought to contact the registrar.
*Lower Alabama for those not in the know.