sentences:  In the 1940s and 1950s, new Republicans settled in the state, mostly white migrants, often retirees, from the American Midwest or the northeastern states.They challenged Democratic domination in Pinellas County and other locations known for their concentration of retirees.The migration of such business executives and senior citizens began to change the partisan profile of the Pinellas County area, and other popular destinations, such as Miami on the Atlantic coast.