President-elect Barack Obama is unlikely to radically overhaul controversial Bush administration intelligence policies, advisers say, an approach that is almost certain to create tension within the Democratic Party. Mr. Obama is being advised largely by a group of intelligence professionals ... who have supported Republicans. The intelligence-transition team is led by former National Counterterrorism Center chief John Brennan and former CIA intelligence-analysis director Jami Miscik, say officials close to the matter. Mr. Brennan is viewed as a potential candidate for a top intelligence post. Ms. Miscik left amid a slew of departures from the CIA under then-Director Porter Goss. Mr. Brennan is a leading contender for one of the two jobs, say some advisers. He declined to comment. Gen. James L. Jones, a former North Atlantic Treaty Organization commander; Thomas Fingar, the chief of analysis for the intelligence director; Joan A. Dempsey, who served in top intelligence and Pentagon posts; former Rep. Tim Roemer of Indiana, who served on the 9/11 Commission; and [Rep. Jane] Harman have also been mentioned. Ms. Harman has also been cited as a potential secretary of homeland security.