August 29, 2008 With GOP in spotlight, Obama and Biden begin bus tour Play video

(Prat Thakkar, NECN) - As the Republican National Convention nears, a role reversal has put John McCain in the spotlight as Barack Obama figths for headlines.

Thursday, Obama delivered his acceptance speech to a crowd of 80,000 in Denver, and an estimated TV audience of 38 million people.

The Obama campaign is wasting no time, Senators Barack Obama and Joe Biden are off to begin a bus tour through the Midwest battleground states of Pennsylvania, Michigan and Ohio.

When you look at the states they're hitting, they're all areas where he'll be looking to get the blue collar working vote... in his speech last night, you heard him talk about the struggles of working Americans...that's an issue you'll hear a lot more of from Obama...but even as he tries to convince Americans that he can really bring them economic relief... and answer critics who say he's thin on specifics, he has to walk a fine line between describing the details of issues and still play on the grander themes of hope and change...

That challenge is made tougher by the time constraints... it's 67 days to go to the general election... and just a month before Obama and McCain meet up for a presidential debate.