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The goal was fulfilled: a rock star performance for politics, galvanizing supporters. But some Democrats worried all that electricity may turn off swing voters.

The stadium idea may have sounded good weeks ago – another show of Barack Obama's unstoppable trajectory, but after the Democrat drew hundreds of thousands in Berlin, Republican rival John McCain started casting Obama as more sheen than substance.

The stage seemed to epitomize Republicans' ridicule. With it’s white columns and archways, it was built to represent Washington, DC, perhaps the White House or the Lincoln Memorial, but to the GOP it came across more like Caesar's Palace, the home of a false messiah.

As some protesters chanted sarcastically in Denver, dressed in togas and holding signs that read, “we’re not worthy,” consultant and Obama backer George Arzt says the critique is that Obama is not of the people.

"He's much more of a celebrity, and a celebrity can attract big crowds, but can't touch the average man,” said Arzt.

Obama said he wanted more space to accommodate as many people as possible.

"I stand before you tonight, because all across America something is stirring,” he said, during his address. “What the naysayers don't understand is that this election has never been about me. It's been about you."

The quest for historical parallels also demanded more room. The first African American candidate of a major political party addresses the world on the 45th anniversary of Martin Luther King, Jr.’s "I have a Dream Speech."

Candidate John F. Kennedy also moved to bigger space for his acceptance speech.

Columnist and author Jimmy Breslin was at both Kennedy and King's speeches.

"Why would you keep it small? This is a staggering moment in American history,” said Breslin.