President-elect Barack ObamaBarack Hussein ObamaDemocrats make final plea for voting rights ahead of filibuster showdown Biden nominates Jane Hartley as ambassador to UK To boost economy and midterm outlook, Democrats must pass clean energy bill MORE and Vice President-elect Joe BidenJoe BidenBiden says he didn't 'overpromise' Finland PM pledges 'extremely tough' sanctions should Russia invade Ukraine Russia: Nothing less than NATO expansion ban is acceptable MORE will announce members of their national security team tomorrow morning at a news conference in Chicago, according to Obama's transition team.

Obama is expected to name Sen. Hillary Rodham Clinton (D-N.Y.) as secretary of state and Defense Secretary Robert Gates to stay on in his current job, though it is unclear what positions Obama and Biden will announce tomorrow.

The news conference is slated to begin at 10:40 a.m. Eastern at the downtown Chicago Hilton.