The expansion of power across the nation for each election was different in the 1948's and 1988's elections because won different political parties, and the main reason was the situations of that time.
According to the maps presented, it can be inferred that elections are always influenced by the situations in which they take place.
In the case of the 1948 election, Truman won because his proposals were focused on countering Soviet influence in the world with the well-known Truman Doctrine.
On the other hand, in the case of the 1988 election, Bush won due to the high popularity that he had during his vice-presidency of Ronald Reagan in the previous term of government. Once he ran as a candidate, his popularity increased, and he managed to win the presidency with a great advantage.
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