Impugning his character isn't "raising valid points".
If I said that I believed he supported a program for amnesty for illegal invaders, supports affirmative action, supports abortion rights, and support gun restrictions, that means I'm "impugning his character"?????
Excuse me, I thought I was raising questions about his political views, not "impugning his character". If questioning a person's qualification for office and political views is considered "impugning his character" we are no longer a democracy and free speech is an empty expression.
If the claims I stated about his positions are not valid ones, point to me to a source which will refute them. I have an open mind. Instead of refuting my arguments, you are impugning MY character.
People who support abortion and gun-grabbing have no character.