The New York Times has a recount on how Barack Obama reached his decision on Joe Biden. The final decision was probably made 10 days ago, while Barack Obama was vacationing in Hawaii.

[…] Mr. Obama’s decision had as much to do with Mr. Biden’s appeal among white working-class voters and compelling personal story, and his conclusion that the Delaware senator was &#8220-a worker.&#8221-

The important information in the NYT piece is that Barack Obama personally called governor Bill Richardson &#8220-late last week&#8221- to announce him that he was not considered anymore. That&#8217-s around the time the Joe Biden rumor began to have more weight in the media circles &#8212-see the InTrade chart below.

Bo Cowgill, back in May 2008 (when I started to act as a prophet of doom):

This is dumb. Cover them if something interesting happens. Maybe your theory will turn out to be wrong. Anyhow: Although the decision is made in secrecy, the Presidential nominees have a number incentives which we have plenty of information about. Specifically:
* They want someone who will balance their tickets in terms of geography, race and class.
* They want someone who will help with weak areas of their campaigns.
* They want someone who will be a good campaign surrogate — giving good speeches and attacking the opponents effectively.
* They want to avoid a VP who will de-motivate or offend the base.
* They want to avoid someone with a bunch of skeletons in the closet such as angry ex-wives, out-of-wedlock kids, etc.
* Etc etc.
Anyhow, I don’t see any reason to ignore these markets in case something interesting happens. I read Midas Oracle so that I don’t *have* to read a whole bunch of other websites!

Bo Cowgill was on the right track, now that I think of it &#8212-in a society where everything leaks out.

On the opposite of the spectrum, Tom Snee was too much extreme in his view:

According to Tom Snee of the Iowa Electronic Market, at Iowa University, futures markets need more hard information than they get in the veepstakes, to reliably predict a result.

Markets are very good at predicting elections, he says – but not choices being made inside Barack Obama&#8217-s or John McCain&#8217-s head.

Justin Wolfers was more measured.

So, Bo Cowgill and Justin Wolfers are the winners, on that one.

I was partially wrong. I am a bit too extreme, sometimes. (Did someone else notice that? ) I need to learn more about&#8230- granularity.

–

PS: On the Republican side, now&#8230-

Who will be the Republican Vice Presidential Nominee?