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Electoral-Vote.com (formally, Electoral Vote Predictor) is a website that analyzes state polls to predict the outcome of U.S. elections. Well known for its color-coded electoral map of the United States showing the state-by-state polls, the site was created during the lead-up to the 2004 U.S. Presidential election in order to predict the winner of that election. The use of state polls, rather than the national polls usually reported by the media, is due to the fact the U.S. Presidents are elected by the electoral college rather than by popular vote. Thus to know who is ahead in the electoral college, it is necessary to project the winner of each state and then add up the resulting electoral votes. This is precisely what the site does.

Contents 1 2004 Presidential election 2 2006 Midterm election 3 2008 Presidential, Senate, and House elections 4 External link 5 References

The site began operating on May 24, 2004 with a simple map and a few links to other pages. The information available grew over time, though. During the months leading up to the 2004 U.S. Presidential election, the site was updated daily to reflect new state polls. The site was immensely popular, atracting nearly 700,000 daily visitors as election day neared and was the most popular election site in the country, in the top 1,000 Web sites in the world, and in the top 10 blogs in the world.

The main page consisted of a map of the United States with the individual states colored varying degrees of red or blue, based on the polls for that state. For instance, Illinois, a state that was polling strongly for Democrat John Kerry was colored dark blue, whereas Michigan where Kerry's lead polled by a small margin was colored light blue. Analogously, Texas was dark red during the whole campaign, indicating Bush's strong lead there. All of the polling data were provided in multiple formats, including HTML, Excel, and .csv for downloading. Other features included historical data on previous elections, charts and animations showing the polls over the course of time, cartograms and links to hundreds of other pages and external Websites with tables, charts, graphs, and other election data and information.

The main algorithm just used the most recent poll(s) in every state. If two polls came out on the same day, they were averaged. This algorithm used all published polls, including those by partisan pollsters such as Strategic Vision (R) and Hart Research (D). A second algorithm used only nonpartisan polls and averaged all polls during the past three days. A third algorithm used historical data to predict how undecided voters would break. Maps for each of the algorithms were given every day, but the first one got most of the publicity since it was on the main page.

The site's final tracking using algorithm 1 posted on Election Day, November 2 gave 262 electoral votes to John Kerry and 261 to George W. Bush, with 15 tossups. The second algorithm (averaging 3 days worth of nonpartisan polls) gave Kerry 245 and Bush 278 with 15 tossups. The third algorithm (predicting the undecideds) predicted 281 for Kerry and 257 for Bush. The actual vote gave Kerry 252 to Bush's 286. Clearly using nonpartisan polls and averaging a few days worth of polls did best. This algorithm got 47 states plus D.C. right, 1 state (Iowa) wrong, and said New Mexico and Wisconsin were too close to call. The most-recent-poll wins algorithm got 46 right, 4 wrong, and one too close to call.

The creator of the website is Andrew S. Tanenbaum, an American computer science professor living abroad who originally went by the pseudonym "The Votemaster".^[1]

On September 6, 2006, the site began tracking the 2006 Congressional elections in the Senate. Shortly thereafter, the House of Representatives was added. The map on the site's front page displayed polling for the 2006 Senate races.^[1] For House races, the site featured a "Hot House Races" page with links to Wikipedia articles on the candidates, links to the candidates' official websites, and notes on the races.^[2] The relatively small number of House election polls as well as 2004's House vote totals were used to project the makeup of the House on the site's front page.^[1]. The site correctly predicted the winners in all 33 Senate races.

As of late December 2006, the site began it's 2008 coverage, which includes the presidential race, all 33 Senate races, and about 40 House races that were close in 2006 and are expected to be highly contested in 2008. For each of the known presidential, senatorial and House candidates, a photo is given, linked to the candidate's Wikipedia entry, along with a brief description of the candidate and race. The site also has four prototype maps, one showing the 2004 presidential election, one showing the governors by state, one showing the senate by state and finally one showing the House delegations by state. While no polling data will be presented until 2008 (because history shows that polls taken two years in advance have essentially no predictive value--too much can change), the site is nevertheless updated several times a week with news about the 2008 elections and candidates.

• electoral-vote.com

1. ^ ^{a b c} Electoral-vote.com
2. ^ The Hot House Races at electoral-vote.com