The graphic shows poll results and a smoothed trend line for each candidate. An equation draws the line so that it reflects the average at any given time of the most recent polls for each candidate.

The Iowa caucuses (Jan. 3) and New Hampshire primary (Jan. 8) kicked off the voting season that culminates on November 4 with the nationwide vote for the country's 44th president.

Dig into the presidential polls and share your thoughts in the comment area below.

USA TODAY's presidential poll tracker is powered by data from Pollster.com.

To build your own 2008 general election scenario use USA TODAY's electoral vote tracker.

Track the flow of campaign contributions with USA TODAY's campaign finance tracker.

See how you and the candidates match up on issues with USA TODAY's candidate match game.

For poll-related blog posts from USA TODAY On Politics click here.

For an index of poll-related stories published on USATODAY.com click here.

For more polling information from Yahoo! click here.