If JFK was planning on dropping Johnson, why was he riding in motorcades in Texas? He barely won Texas in 1960 with Johnson on the ticket. If he drops Johnson, he will lose Texas in 1964 (unless there is a landslide election). In any case, with any such plans in the offering, JFK would have written off Texas and instead visit some other key state. Texas was chosen for a visit because it is a large state, it has a lot of electoral votes, and it could go either way in 1964. Provided he doesn?t drop Johnson.
While Johnson may have lost some of his popularity in Texas, and more so in the Deep South, due to his support for Civil Rights, Texas, on the whole, was not as racist as the Deep South. Despite the Democratic Party?s support for Civil Rights in the 1960?s, the Texas voted for the Democratic candidate in both 1964 and 1968. Johnson still had a lot of support within Texas, on the whole.
But if JFK drops Johnson in 1964, that will severely jeopardize Texas. I?m not saying JFK would not drop Johnson under any circumstances. But if he was planning to do so, he would write off Texas and go visit a different state that could go either way, to help make up for the probable loss of Texas.