Belief in a single contradiction, no matter how innocent-seeming (or justified in a particular political situation) turns logic in on itself, giving us the logical grounding to believe anything no matter how idiotic or untrue.
No one in his or her right mind would spend over a billion to win an election unless the value of victory was much higher than that, which in the case of winning the presidency includes influence over trillions in spending (not to mention the other extraordinary powers and perks of office).
Far from being some form of esoteric knowledge, critical thinking turns out to be one of the more easy-to-learn and pragmatic skills available to all. Or at least all those willing to put in the reasonable amount of work needed to achieve success.
For most people, civility translates to quieter, measured and (one hopes) thoughtful discussion (vs. the raised voices and uncomfortable feelings we associated with what we've come to think of as uncivil behavior).
Even if this election ends in a victory for the president, it's worth examining whether embracing our biases (and re-enforcing them by surrounding ourselves with people and media that confirm them) is ultimately good for us as individuals, party loyalists or citizens of the nation.
Before deciding that a campaign based on accusations of dishonesty must work, it might be worth checking your own biases at the door, at least long enough to ensure they are not leading you, your cause and your candidate over another cliff.