Maybe the DNCC has kept track of the polling this summer and figures the Democratic nominee is officially in distress.  That’s the only explanation for a silly gaffe by the convention committee for the graphics on their credentials for those allowed to see Barack Obama’s acceptance speech at Invesco Field.  The holographic image uses an American flag motif with the blue field at the bottom, with Obama’s head emerging from it in one of the two alternating images

the Obama campaign says the flag is not upside down. He says it is a stylized flag designed to blend the stars on Senator Obama’s shirt with the flag blowing in the wind.

The DNCC community credentials incorporate patriotic design elements. They do not depict an actual American flag.

Blue field …. check. Stars …. check.  Alternating white and red stripes …. check.  Looks like the flag to me.