In the thread on the Republican race, Realjohnboy raised a relevant point about the Iowa caucuses a bit ago:
realjohnboy wrote:We all know that Iowa's event is not a primary but a caucus. There is a big difference.
As I understand it, the Dems and Repubs will have their respective gatherings and at some point hands will be raised in support of the various candidates.
If I lived in Iowa, my hand would go up for Bill Richardson. [..] But my say doesn't end there. The supporters of the various third tier candidates in both parties would be courted to switch our votes and go for someone else the next time hands are raised.
So when the media reports that Hillary-Obama are virtually tied, as are Romney-Huckabee, they are only looking at the first round.
Is my understanding of the process in Iowa correct?
And I replied:
nimh wrote:Right. People who in the first round at their district's caucusing support a candidate that gets less than 15% are then asked to switch to another candidate in the next round.
In 2004 this helped Edwards, who got a lot of switch-overs from Kucinich (after having diligently established links with that constituency beforehand). Now, too, Edwards could stand to benefit especially: the Edwards camp was touting a poll this week (or might have been last week) that showed that while Hillary and Obama only had about 20% of second-choice preferences (Obama doing only marginally better than Hillary), Edwards had about 40% [correction: about 30%].
An earlier poll I remember that asked about second choices, a month or two ago, also had Edwards at the top of second choices, but with Obama narrowly trailing - and again, Hillary in last place, at a sizable distance. [..]
OK, so I came upon some more info about second preferences.
Newsweek published a new poll about the Iowa caucuses this weekend. The poll should be approached with ambivalence: it has Huckabee and Obama up much higher than other recent polls, and Romney and Edwards considerably lower than other recent polls.
Moreover, as pollster.com remarks, it identifies
a far larger proportion of Iowans as "likely cacus-goers" than other polls, and than the proportion that actually turned out in previous elections.
However, the Newsweek poll is interesting in one respect: it has info on what people's second choices would be.
Here are those numbers for the Democratic race: