NEBRASKA DEMOCRATIC U.S. SENATE CANDIDATE BOB KERREY HAS CHALLENGED HIS REPUBLICAN OPPONENT TO ONE MORE DEBATE. KERREY SAYS HE WOULD DEBATE DEB FISCHER OVER NATIONAL SECURITY ISSUES IN THE FINAL WEEK OF THE CAMPAIGN:



FISCHER IS UPSET OVER ADS REFERRING TO A 1990 LAND DISPUTE BETWEEN HER AND HER NEIGHBORS. AN OMAHA WORLD HERALD POLL SHOWS FISCHER'S LEAD OVER KERREY HAS NARROWED, WHICH HE SAYS IS FROM SEVERAL FACTORS:



THE WORLD HERALD HAS ENDORSED FISCHER IN THEIR RACE, BUT KERREY IS TOUTING AN ENDORSEMENT TODAY FROM A FORMER REPUBLICAN SENATOR:



KERREY SPOKE AT A  NEWS CONFERENCE AT MARTIN'S AIRFIELD IN SOUTH SIOUX CITY.