Thomas B. Edsall writes that Clinton is "going for the kill" in Iowa:
The decision of Hillary Clinton's presidential campaign to send 100 or more new staffers into Iowa demonstrates that she and her aides have determined to their own satisfaction that she can cripple Barack Obama in the first-in-the-nation caucus. Iowa is the only state where current surveys show Obama to be within shooting distance of Clinton. In late August, Clinton took a small lead of 5.2 percent in a poll of likely Democratic caucus goers. That lead, the smallest Clinton holds in any early primary or caucus state, has held up through seven of the eight most recent polls, increasing the willingness of the Clinton team to gamble on a new offensive. The Obama campaign has already described the January 3 Iowa contest as a must-win event. Clinton's burst of hiring is a declaration that she intends to go for a knockout punch.
Couldn't you also say this move by Clinton suggests that her campaign is seriously worried about Obama winning Iowa? That the campaign recognizes it is more vulnerable than it appears? Such an interpretation does not comport with the current Hillary-is-unstoppable media storyline, of course. But that doesn't mean it's wrong.