Another "step on the anthill" post...
Because she is a Democrat and the first serious female contender for the presidency in a time of war, convincing voters that she can be trusted with the nation's security is one of her biggest hurdles.
The New York senator seems to have won this trust, helping her jump to the front of the Democratic pack.
In several national polls and in Iowa, the first caucus state, she is the Democrat who most likely primary voters say is the "strongest leader," a term generally seen as encompassing defense know-how. And a New York Times/CBS News poll of Republicans as well as Democrats last month found that 58 percent of respondents thought it was somewhat or very likely that she would be an effective commander in chief.
Clinton came into the campaign with some advantages in foreign policy, including eight years of globe-hopping and meetings with world leaders as the wife of a president. But the extent to which she is seen among voters as a credible commander in chief has surprised many campaign observers, given how much other women in American politics have struggled to be taken seriously on military and foreign policy issues.
"It is amazing to many of us, in a year where being commander in chief is the most important issue, that the sole woman is actually the only one who has managed to come across as a strong commander in chief," said Elaine Kamarck, a lecturer at Harvard's Kennedy School of Government who worked in the Clinton White House and advised Al Gore's presidential campaign in 2000, but has not decided whom to support in the 2008 race.
Added Daron Shaw, a political scientist at the University of Texas in Austin and a former campaign strategist for President Bush, "She's come off as credible and serious on national defense -- an issue that two years ago most of us would have thought would be a liability for her."
http://www.boston.com/news/nation/articles/2007/08/12/tough_talk_drives_clinton_effort/