Same 36 voters. Three elections. Three different winners.
Every cell below is a fixed, unchanging voter. Nobody moves, nobody changes their mind. The only thing that changes between these three maps is where the district lines are drawn.
Notice how misshapen Maps B and C are compared to Map A's clean squares. That's not an accident — in real redistricting, oddly-shaped, snaking districts are usually the tell that lines were drawn to engineer an outcome rather than to group nearby voters together.
Map B shows the more extreme version of this: Red, with only 44% of the vote, wins 75% of the seats. That's not a hypothetical — deliberately drawing districts to lock in a result like this, using exactly this kind of packing and cracking, is a real and common practice. See it done for real: three actual U.S. congressional districts, drawn to their true boundaries.