"3) Bush 41 looking at his watch during one of the debates."
If I'm recalling the last days before the election correctly, President Bush (GHW) also said "he's crazy," in reference to Clinton, which got a lot of media play and effectively killed off what appeared to be a late polling swing to his favor.
The indictment of Casper Weinberger in the last days before the election killed off GHWB's chance for reelection.