In 2004 which state was the key battleground state in the presidential election between George Bush and John Kerry

As in the 2000 presidential election, voting controversies and concerns of irregularities emerged during and after the vote. The winner was not determined until the following day, when Kerry decided not to dispute Bush's win in the state of Ohio. The state held enough electoral votes to determine the winner of the presidency. Both Kerry and Democratic National Committee Chairman Howard Dean have stated their opinion that voting in Ohio did not proceed fairly and that, had it done so, the Democratic ticket might have won that state and therefore the election. However, there was far less controversy about this election than in 2000.