In addition to showing U.S. Sen. Barack Obama (D-Ill.) with a 5 point advantage (48 percent to 43 percent) over U.S. Sen. John McCain (R-Ariz.), today's TIME/CNN poll also suggests that Obama's chances in the Keystone State may be boosted by the presence of third-party candidates on the ballot.

When voters were asked to choose among Obama, McCain and three third-party candidates, the Democrat's 5 point lead grew to 9 percentage points.

Obama leads McCain 47 percent to 38 percent, while independent candidate Ralph Nader attracts 7 percent of the vote and Libertarian candidate Bob Barr drew an additional 1 percent.