Final answer:
Warren G. Harding secured the presidential election of 1920 with a campaign focused on normalcy and healing. His slogan reflected Americans' desire for a return to a more peaceful and prosperous time. Postwar conditions, such as the flu epidemic and the Red Scare, were key factors in his landslide victory.
Step-by-step explanation:
Warren G. Harding secured the presidential election of 1920 by offering a campaign focused on normalcy and healing after the war and other issues that Americans had faced. His campaign slogan was 'America's present need is not heroics but healing; not nostrums but normalcy; not revolution but restoration.' This resonated with Americans who desired a return to a more peaceful and prosperous time.
His landslide victory can be attributed to the postwar conditions, such as the flu epidemic and the Red Scare, which made Americans eager to move on and focus on personal freedoms and hedonism, leading to what became known as the Jazz Age.