Spending estimates for the account are disputed, but run as high as $30 million. Zenith declined to comment.
It's believed the pitch includes independent Kirshenbaum Bond Partners WPP Group's J. Walter Thompson; Interpublic's Hill, Holliday, Connors, Cosmopulos; and Avrett, Free & Ginsberg, all New York.
Incumbent Cramer-Krasselt, Chicago, is not participating. A decision is expected by the end of November.