voter registration drives

Nevada is one of several states still up for grabs. Republican voters in the state's rural counties are enthusiastic about Republican presidential nominee John McCain.

But Democrat-run voter registration drives are gaining ground in urban areas like Las Vegas. However neither campaign is taking the state for granted.

Political groups are wrangling over voter registrations and access to the polls. In Ohio, Democrats and Republicans are fighting over interpretation of a state law, which Democrats say allows voters to register and immediately cast an absentee ballot.

Republicans say that opens the door to fraud. The GOP is also closely watching and challenging voter registration drives by third-party groups.