They just don't care beyond electing their favorite personality. They'll use any pathetic argument along the way.

From "The American President":

Lewis Rothschild: They don't have a choice! Bob Rumson is the only one doing the talking! People want leadership, Mr. President, and in the absence of genuine leadership, they'll listen to anyone who steps up to the microphone. They want leadership. They're so thirsty for it they'll crawl through the desert toward a mirage, and when they discover there's no water, they'll drink the sand.

President Andrew Shepherd: Lewis, we've had presidents who were beloved, who couldn't find a coherent sentence with two hands and a flashlight. People don't drink the sand because they're thirsty. They drink the sand because they don't know the difference.

They truly don't know the difference between leadership and a con job.