By 1988 , the Republicans had chosen Prescott Bush 's son George H. W. Bush as its presidential candidate on a conservative platform . Bush 's national convention pledge to stave off new taxation were he elected president ( " Read my lips : no new taxes ! " ) marked the candidate 's full conversion to the conservative movement and perhaps the political death knell for Rockefeller Republicanism as a prevailing force within party politics
national convention
1988 Republican National Convention
Rockefeller Republican