NEW YORK (Standard&Poor's) March 16, 2006--Standard&Poor's Ratings Services said today that it assigned its 'A-' preliminary senior debt, 'BBB+' preliminary subordinated debt, and 'BBB' preliminary preferred stock ratings to Lincoln National Corp.'s (NYSE:LNC; A-/Watch Pos/A-2) universal shelf, which was filed on March 14, 2006. Standard&Poor's also said that it placed these ratings on CreditWatch with positive implications. "The preliminary ratings are on CreditWatch positive because the ratings on LNC and its operating subsidiaries were placed on CreditWatch positive following its Oct. 10, 2005, announcement of its intention to merge with Jefferson Pilot Corp. (NYSE:JP)," explained Standard&Poor's credit analyst Kevin Ahern. The new shelf has an undesignated notional amount in accordance with the