Watch the Debates lets you find debate videos according to year and or issue. Once you have found a video you can register your reactions to the arguments candidates make in the videos. You register your reaction by using thumbs-up and thumbs-down icons. You can register a reaction as often as every five seconds in a video. When you register your reaction you will be shown graph of how other viewers responded at the same point in the video.
Applications for Education
Watch the Debates could be a great resource for high school and middle school social studies teachers. Through the issue filter on Watch the Debates students can see which issues were most pressing at various points in the last forty years. Students could also see how responses to those issues have changed over the years. Finally, students can see that there was a time when a debate between politicians was about the issues important to the people and didn't devolve into name-calling.
One way that you could use Watch the Debates in your classroom is to have students pick an issue then work in groups to trace when that issue first appeared in a debate and how candidates' responses to that issue vary over time. For example, I might have my students choose the issue of economy then break-up the class into small groups with each group watching and taking notes on a different debate. Then I'd bring the class back together to compare notes on what candidates have said about the economy through the years.
On a related note, check out The Living Room Candidate to see the evolution of Presidential campaign commercials since 1960.
H/T to Open Culture for the Watch the Debates link.