Mark Lucovsky of the Google AJAX APIs team has written up a detailed article on how the 2008 U.S. Election site was created and implemented.

A myriad of the AJAX APIs are used here. The election news comes from:
  • A News Search:
  • A channel search for the YouTube tab:
  • And, a Custom Search Engine was created for the blog search:
Take a look, and play with the control that he talks about here: