You may have noticed two new tabs at the top of this page, one that says, "YouTube subs" and another called, "Event demands." They both link to two new members of the ever-growing family of techPresident charts showing candidates' support on various social web services.

Our new YouTube charts take data from YouTube's YouChoose '08, a new channel devoted to political video. Several, but not all, of the presidential candidates have added their videos to the site, which provides a channel for each candidate. These charts show both the number of views and the number of subscriptions for each candidates' channel, separated by Republicans and Democrats. Coming soon: charts showing the number of views for each candidates' channel. Like our MySpace charts, these numbers shouldn't be looked at as a indicator of overall support for a candidate, or even online support; they illustrate nothing more than how popular a candidate is on YouTube, which reflects the candidates' deftness with online video and their popularity with the YouTube community.

We also added charts showing the number of demands expressed for each candidate on the new site, Eventful. Eventful gives grassroots supporters the ability to request, or "demand," that the candidate come to their city. While no candidate has directly responded to this bottom-up aggregation of voter attention, several have adopted their Eventful pages. What we are seeing could be the first sign of what we're calling "candidate-relationship management," coming from below, rather than the traditional "constituent-relationship management" that comes from on high.

The service was originally started to give fans the chance to demand that their favorite musicians come to town. Now, it looks like Eventful is being used for politics almost as much as for music. This week Barack Obama is the sixth most-demanded performer in the country (down from #3 last week), following Ben Folds, Tyrese, Korn, Simple Plan, and Pretty Ricky. This all may seem inconsequential right now, but sooner or later a candidate is going to show that he or she is listening and actually do an event where their supporters have been "demanding" they come; at that point things could get really interesting.