Answer:
1- Texas is the state that has the greatest potential to change the results of a presidential election.
2- The number of a state's electoral votes could change if the state population has a major change compared to other states .
Step-by-step explanation:
-In America, presidential elections are defined by the Electoral College, where the electors of each of the states of the Union appoint the president, after popular voting that determines which party the electors of each state must vote for.
In the present question, the states mentioned are Texas, which has 38 electors; Arizona, which has 11 electors, Michigan, which has 16; and Pennsylvania, which has 20.
Therefore, the state that will have the greatest impact on the presidential election will be the one with the largest population, and therefore, the largest number of electors, which in this case is Texas.
-The number of voters that each state has in the Electoral College is determined by the population of each state, which is corroborated every ten years by the Census Bureau through a national population census. Thus, the states with the largest populations have the largest number of voters, and vice versa. Therefore, a large change in the state's population ratio to the national total would in turn imply a change in the state's representation in the Electoral College.