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Track the candidates as they crisscross the country.

(CNN) – Republican presidential nominee John McCain plans to campaign in Florida Friday, while his Democratic opponent, Barack Obama, will pay a visit to Virginia.

McCain’s schedule includes a rally in Miami and Melbourne, Florida. The most recent CNN Poll of Polls showed that he has ground to make up in the state. Obama leads McCain by four points, 49 percent to 45 percent. The polls were conducted October 4 through October 14.

Florida begins its early voting period on Monday, October 20.

Obama, scheduled to attend a rally in Roanoke, Virginia, is hoping to pick off a state that hasn’t backed a Democrat for president in 44 years.

A CNN/Time/Opinion Research poll released Wednesday indicated a 10-point lead for Obama, 53 percent to 43 percent. The poll has a margin of error of plus or minus 3.5 percentage points.

An update of the CNN Electoral College map Wednesday moved Virginia and its 13 electoral votes from the category of a tossup state to a state that is leaning toward Obama.

Interactive: The CNN Electoral Map

Sarah Palin, the Republican vice presidential nominee, is scheduled to hold rallies in West Chester, Ohio and Noblesville, Indiana.

The Democratic ticket has visited Indiana six times since June 8, according to a CNN count. During the same period, the GOP ticket has made one visit.

Election Tracker: See the candidates' travels

Democrats have won Indiana just once during a presidential election in the last 70 years, so the Republicans’ focus on other states is not surprising.

But, the most recent CNN/Time/Opinion Research Corporation poll in the Hoosier state showed McCain with only a five-point lead, 51 percent to 46 percent. The poll, conducted October 3 through October 6, has a margin of error of plus or minus 4 percentage points

Election Tracker: See all the latest polls

Democratic vice presidential nominee Joe Biden is scheduled to make a swing through the Southwest, holding rallies in Messilla, New Mexico and Henderson, Nevada.

Nevada is a tossup state, according to a CNN analysis of the electoral map. A CNN Poll of Polls in that state had Obama leading 49 percent to 45 percent. The polls were conducted September 28 through October 9.