In this week in the Intrade prediction markets, John McCain’s “stock” has sharply risen to 28 and is nearing Rudy Giuliani’s 29.4. McCain’s value has skyrocketed near 40% over the last few days, coinciding with the news of Giuliani’s donations to Planned Parenthood, an abortion-rights organization, and McCain’s renewed strength in early primary polls. Over the same time period, Giuliani has slipped slightly more than 10%. Fred Thompson dropped from his peak of 18 and is now hovering near 15. Mitt Romney has also experienced a sharp increase from 15 to nearly 19.
There have been minor fluctuations on the Democratic side, but Hillary Clinton holds a commanding twenty-point lead over Barack Obama. John Edwards is mired behind Al Gore (10.7) at a paltry 8.2.
For more information about Intrade and the political markets, check out this past New York Times article.
And for some reading, The Wisdom of Crowds by James Surowiecki.