Democrats complained loudly yesterday when Republicans criticized the record of former vice president Walter Mondale, who is set to replace the late Paul Wellstone on the senatorial ballot in Minnesota. "The family hasn't had a chance to grieve and lay the dead to rest, and my Republican friends are on national television criticizing a potential opponent," the state party chief told the Washington Post. "It's inappropriate." Yet despite their demands for a period of mourning, Democratic operatives both in Minnesota and in Washington are busy preparing possible legal challenges should Mondale lose to Republican Norm Coleman.On Monday, Minnesota state...