If Obama were unable to win over the white, working-class Rust Belt voters who have backed Clinton, he would have to compete in more states to reach the 270 electoral college votes required to win the presidency.
Much could change over the next six months, but analyses of each of the six states - which total 66 electoral votes - indicate that in some cases changing the electoral map will be a daunting task.
Here's their map and analysis in a nutshell: In Colorado and Virginia he has a chance. Less so in North Carolina, South Carolina, Georgia and Mississippi. Also check the Gallup analysis we wrote about earlier.
- In today's Gallup Daily:
John McCain and Barack Obama are now virtually tied at 46% to 45% when registered voters nationally are asked for whom they would vote next November if these were the two presidential nominees, while Hillary Clinton maintains a 48% to 44% margin over McCain in a hypothetical Clinton-McCain matchup.
And despite the media hype with them declaring the race over, Obama holds only a 6 point lead over Hillary.
Are you sick of primary coverage? What other news would you like to discuss?