(CNN) - John McCain on Thursday kicks off his "Joe the Plumber" tour to woo Florida's blue-collar vote, as Barack Obama returns to Indiana, a traditionally red state where McCain is ahead.
McCain plans events in Daytona Beach, Ormond Beach, Altamonte Springs, Orlando, Plant City and Sarasota.
Obama holds a 3 percentage point lead over McCain in Florida, 49 percent to 46 percent, according to CNN's average of Florida polls. Florida has 27 electoral votes up for grabs.
McCain and Gov. Sarah Palin's pitch to working-class voters is that their team will protect small businesses.
The Republican ticket is focusing its argument on Obama's highly publicized conversation with Ohio voter Samuel J. Wurzelbacher, since dubbed "Joe the Plumber."
Earlier this month, Wurzelbacher told Obama that he was about to buy a company that makes more than $250,000 a year and was concerned that the Democrat would tax him more.
Obama explained his tax plan in depth, saying it's better to lower taxes for Americans who make less money so that they could afford to buy from his business. His tax plan would lower taxes for people making less than $250,000 a year.