Very thorough and comprehensive collection. For me, the best are the 1972 "Nixon Now" and 1980 "Reagan-The Time is Now" ads.
The 1980 Ted Kennedy ads against Jimmy Carter were brutal, and many of them are available on You Tube. Carroll O'Connor made several for Kennedy that year--knocking Carter's "depression" and saying it was going to be worse than Herbert Hoover's. When you see these ads, it's fairly easy to see that Carter didn't attract nearly enough support from Kennedy voters in November--and a number of them ended up voting for Reagan.
Carroll O'Connor for Ted Kennedy
https://www.youtube.com/watch?v=vkD0uJSUEGI