The Obama campaign was satisfied, so far, with early results from several states and voting procedures, said David Axelrod, chief political advisor to Democratic presidential hopeful Barack Obama, dpa reported.
Speaking to CNN, Axelrod said things were going so well that his main worry was that he "can't exactly figure out what should be giving me heartburn right now."
As of 0130 GMT, Obama had been declared the winner of 103 Electoral College votes compared to 58 for Republican rival John McCain, according to projections by at least two US broadcasters.
"The main thing is we would like to make the clock go faster and get the numbers counted," Axelrod said.
While both campaigns have thousands of lawyers waiting to intervene in possible polling station disputes, there had been no more than the usual number of problems, Axelrod said.
"Everything we see seems positive," the strategist said. "There have been places where we needed to intervene to make sure there were more voting machines or ballots. Just the normal stuff you'd see on election day."
The results so far made him feel positive about the "possibility of putting together a new coalition, breaking up the red state and blue state paradigms." He was referring to the deep divisions in the country between conservative Republican, or red, states and liberal Democrat, or blue, states.
Axelrod said Obama had played his traditional election day basketball game with friends and staff late in the afternoon, near his home in Hyde Park in Chicago.
Obama was preparing to address a massive rally, expected to be attended by a million people, in Chicago's Grant Park later Tuesday, when the results of the election are clear.