Success in politics depends on the ability of a candidate or a party to forge and maintain coalitions. One of the most successful coalitions in modern political history has been the "Reagan Coalition", which brought together economic and social conservatives under the umbrella of the Republican Party. Preserving that coalition brought the Republicans great success, including occupancy of the White House and twelve years of control over the House of Representatives. The coalition that Reagan fashioned is fraying, however, and is on the verge of unraveling. The causes are many, but the coup de grace is likely to be the...