Title text:
For the first time in history, it will be possible for a Democratic Senator from Kansas to see a programmable automatic digital computer.
Transcript:
Transcript will show once it’s been added to explainxkcd.com
Source: https://xkcd.com/3320/
That election was in 1990. Maybe there were some usenet with news about the elections but not websites. The first website that may have had covered something like that was Bloomberg in 1993