Obama, McCain seek leader's image in final debate

Their face-off comes as Obama widens his lead in typically Democratic states and campaigns with an air of optimism about his prospects, while McCain seeks a way to gain ground and finds himself defending traditionally Republican states with less than three weeks left in the race.

"We cannot spend the next four years as we have spent much of the last eight: waiting for our luck to change. ... As president I intend to act, quickly and decisively," McCain said Tuesday in battleground Pennsylvania. There, he unveiled new economic proposals and previewed a possible debate strategy: argue that he would be different from Bush and better than Obama.

One day earlier in swing state Ohio, Obama outlined his own economic plan and showed off his own pitch. He suggested that McCain was more of the same and that putting a Democrat in charge was the only way to fix the economy's woes: "It will take a new direction. It will take new leadership in Washington. It will take a real change in the policies and politics of the last eight years."

The economic crisis has transformed the campaign over the past month. Obama has built leads nationally and in key states as the turmoil has returned the nation's focus to the unpopular Bush's policies. Now, the burden is on McCain to try to reverse his slide.

Wednesday's debate at Hofstra University in Hempstead, N.Y., is slated to focus entirely on the economy and domestic policy. The candidates will be seated at a table with moderator Bob Schieffer of CBS.

Both presidential contenders have used the previous debates to make and remake their main campaign points, frequently sidestepping direct questions such as how they would have to scale back their long lists of campaign promises in light of the economic crisis.

Advisers for each candidate say he will use the final debate to lay out his vision for the country and promote his economic policies while drawing differences with his opponent.

Character attacks--subtle or not--also could occur.

Obama has increasingly labeled McCain "erratic" and "lurching" during the economic crisis. The words suggest unsteadiness on the part of the 72-year-old four-term senator.