[ceejayoz]

But that's not true, either.

My town has a village at its core; village residents vote in two places.

Our school district doesn't perfectly match the town's borders, either, so some folks vote in two places there.

One person gets one vote in a particular election.

[pseudalopex]

This is not what people mean when they say vote in 2 places commonly. And I said 2 cities before.

1 person 1 vote is an expression of equal representation.[1] Someone who votes in city 1 and city 2 and someone who votes in city 1 solely have unequal representation.

[1] https://en.wikipedia.org/wiki/One_man%2C_one_vote