Two counties in the northern Panhandle , Ochiltree and Roberts , gave Goldwater over sixty percent of the vote , further reflecting this region ’s trend towards the Republican Party . Given that it was also Johnson ’s home county , Gillespie County in the Texas Hill Country voted Democratic for the only time since Franklin D. Roosevelt ’s landslide in the 1932 election , in which he carried every county . This is the only presidential election between 1952 and 2008 that Dallas and Harris counties voted for the Democratic candidate . Dallas in particular , likely swung towards Johnson due to the city still being in mourning from the assassination of President John F. Kennedy , which had occurred less than a year before the election . Despite this strong swing , Johnson only carried Dallas County by a 9.6 percent margin
assassination of President John F. Kennedy
Assassination of John F. Kennedy
1964 United States presidential election in Texas