No you’re good! It’s just “owned” stake based, so whatever account holds your stake is what you should vote with. If your stake is spread out over multiple accounts, vote with all of them.
Some hold their stake in one account and delegate it out to their other accounts (in this case you can just vote with the one that holds the stake).
Some hold stake in multiple accounts, and they then can vote with all of them so they can use all their stake.
I hope that makes sense.