Texas was going to vote for Nixon, a Republican from California? Doesn’t seem likely.
The 1960 United States presidential election in Texas was held on November 8, 1960, as part of the 1960 United States presidential election. The Democratic Party candidate John F. Kennedy, narrowly won the state of Texas with 50.52 percent of the vote to the Republican candidate Vice President Richard Nixon's 48.52%, a margin of two percent, giving him the state's 24 electoral votes.
Eisenhower had carried Texas in both 1952 and 1956. Kennedy was Catholic, and Al Smith, a Catholic, had lost the Upper South, including Texas, in 1928. While the Democrats controlled politics at the state level, the fact that Texas and other Southern states like Tennessee and Florida were voting Republican on the national level was worrisome. That is the probable reason for Kennedy choosing Johnson as his running mater,