About 40,000 signatures have been collected to try to force the San Diego City Council to keep the Mount Soledad cross at the site of a war memorial in La Jolla, supporters of a petition drive said yesterday. They need to submit a minimum of 33,610 signatures from registered voters by April 7 to get the council to reconsider its March 8 decision to move the cross to comply with a federal court ruling. The council's other option is to hold a special election on the issue within 88 days. The City Clerk's Office estimated a special election would cost...