This is how British Bloggerhead in 2003 argued that the blogs would benefit politicians:
... publishing frequency (presented in the correct format) has a very positive effect not only on people, but also on the search engines that are using them increasingly to decide what is the most important, relevant and fresh result for any given search query.
A valid weblog will have a pronounced effect on the two top search databases on the planet - Google and Yahoo. People seeking information relating to issues you think to be important will invariably find your site among the top results.
In the 2006 Senatorial election some political grassroots organizations took advantage of this. Google Bombing campaigns were launched to try to tarnish political opponents.
Mydd's Goggle bombing campaing: The utilization of Google Adwords and simultaneous, widespread embedded hyperlinks in order to drive as many voters as possible toward the most damning, non-partisan article written on the Republican candidate in seventy key US Senate and House races. The campaign will run from Tuesday, October 24th until Tuesday, November 7th.
In 2008 the battle will be fought on other grounds reports Promotion World.
Google Bombing might be a non-issue for the 2008 election given recent changes by Google, but the MySpace wars and other Web battles are just now heating up.
Instead the war for web optimization will be fought using search engine rankings, Google PageRank inbound links, MySpace, and Alexa rankings.
To view out how the candidates are doing so far, check out this link.