Question: The belief that larger majorities for a president in a
The belief that larger majorities for a president in a presidential election help the president’s party increase its representation in the House and Senate is called the coattail effect. The file P11_48.xlsx lists the percentage by which each president since 1948 won the election and the number of seats in the House and Senate gained (or lost) during each election by the elected president’s party. Are these data consistent with the idea of presidential coattails?
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