There is definately a significant enough yearning for new political blood in the 2008 Presidential race, and a significant enough level of disatisfaction with the current options in both Parties, to open up a second window for additional candidates to announce this summer.
Turnabout is fair play. To support the above contention I point readers to an entry made by you to your blog:
"Iowans not so happy with Democratic field for 2008
Neither am I.
Here are bits of a few different articles on the May 2007 Iowa Poll in which Edwards took 29%, Obama 23%, Clinton 21%, Richardson 10%.
But:
A new Des Moines Register poll suggests that Iowans likely to participate in the January caucuses aren’t entirely satisfied with the list of declared candidates.
Here is the question asked:
(Asked of Democratic caucus-goers) I’m going to mention some people who are not currently running for president. For each, please tell me if you would like to see them get into the race, or not.
Retired General Wesley Clark. Former Vice-President Al Gore. Massachusetts Senator John Kerry. The Reverend Al Sharpton.
The answer: Gore 44% Kerry 23% Clark 20% Sharpton 6%"
http://www.awesclarkdemocrat.com/2007/05/iowans_not_so_happy_with_democ.htmI myself will point out that the combined totals in that poll, of those currently supporting Edwards, Obama or Clinton for the nomination, are exceeded by the combined totals of those who still want to see Gore, Kerry or Clark enter the race for it. While that doesn't directly translate into the latter three having as much or more current active support as the present three announced front runners, it does indicate that substantial fluidity still exists at this stage of the Democratic Presidential contest, in Iowa at least.