Half of the first presidential debate between President Barack Obama and Republican presidential nominee Mitt Romney will be focused on the economy, the debate's moderator announced Wednesday.

The first three of the Oct. 3 debate's six segments will focus on the economy, moderator Jim Lehrer said in a statement provided by the Commission on Presidential Debates.

The other three segments will focus on health care, the role of government and governing, according to the release.

Each segment is to be a 15 minute portion of the 90 minute program.

The statement also acknowledged that the topics could change "because of news developments."

The debate will be held at the University of Denver in Denver. It will be followed by two other presidential debates, and a debate between the vice presidential candidates.