WASHINGTON -- The Republican Party, known since the late 19th century as the party of business, is losing its lock on that title. New evidence suggests a potentially historic shift in the Republican Party's identity -- what strategists call its "brand." The votes of many disgruntled fiscal conservatives and other lapsed Republicans are now up for grabs, which could alter U.S. politics in the 2008 elections and beyond. Some business leaders are drifting away from the party because of the war in Iraq, the growing federal debt and a conservative social agenda they don't share. In manufacturing sectors such as...