Justin Wolfers cant believe that prediction markets dont show already a clear win for the Dems in the 2008 presidential election.

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How Much Do Election Shakeups Affect the Nation&#8217-s Economy? – [US politics &amp- financial markets] – by Justin Wolfers and Mark Thoma – 2006-11-03

[Justin Wolfers] And the major puzzle that I currently see? The past two years have clearly been terrible for Republicans, with Iraq deteriorating, Katrina undermining the public trust, and corruption scandals aplenty. And consequently their chances of keeping control of the House have fallen precipitously (Intrade.com charts here). But the real surprise? Prediction markets tell us that the odds of Republicans winning the White House in 2008 remain virtually unchanged. Neither the incumbency advantage coming from victory in the 2004 elections, nor the subsequent declines in Republican fortunes have shifted the odds (chart: here), and the 2008 Presidential election remains a coin flip. Stay tuned: It looks like Tuesday will be a long night. And when the counting ends, the two-year campaign for the White House begins.

My Take: Our good doctor Justin Wolfers takes his Democratic dreams for the reality (all that said in all due respect for this bright researcher). We&#8217-re two years away from the November 2008 presidential election. The margin of error is still enormous, so today&#8217-s market-generated probabilities (Dems: 48.6% – GOP: 48%) for the 2008 presidential race mean strictly nothing. Plus, at times, a US presidential candidate can get substantial votes from the other camp (e.g., Ronald Reagan seducing many Democratic voters, etc.).

Addendum: Mike Linksvayer has an interesting comment, attached below this blog post.

Addendum 2 (November 04): Professor Justin Wolfers has responded, in the comment area, below this blog post. (And his paper is excerpted here, on Midas Oracle.)