CBS/New York Times, 9/13-14/2001, n=959 adults (source: National Journal's Hotline).
Should the U.S. take military action against those responsible? Yes: 93% of Republicans, 86% of Democrats, 76% of independents
Should the U.S. take military action against those responsible for attacks, even if it means innocent people are killed? Yes: 74% of Republicans, 64% of Democrats, 67% of independents
What if that meant going to war with a nation harboring those responsible for the attacks, then should the U.S. take military action against those responsible for the attacks? Yes: 74% of Republicans, 61% of Democrats, 65% of independents
What if that meant thousands of innocent civilians may be killed, then should the U.S. take military action against whoever is responsible for the attacks? Yes vs. No: Republicans 66% to 16%, Democrats 55% to 28%, independents 60% to 19%.
And, regarding the question of whether or not the U.S. was in a state of war:
Los Angeles Times, 9/13-14/2001, n=1,561 adults:
In your opinion, is the United States now in a state of war? Yes: 74% of Republicans, 70% of Democrats, 66% of independents (Q11)
If it is also determined that the Taliban ruling party in Afghanistan is harboring Osama bin Laden, would you support the United States and its allies retaliating with military action against Afghanistan, even if it could result in civilian casualties, or would you oppose that? Support: 91% of Republicans, 80% of Democrats, 78% of independents (Q37)
What about Osama bin Laden's organization itself? Do you think the United States should retaliate against Bin Laden's group through military action, or should the United States pursue justice by bringing him to trial in the United States? Retaliate vs. bring to trial: Republicans 80% to 17%, Democrats 66% to 28%, independents 64% to 27% (Q38)
(All emphases are mine)
I'm preaching to the choir to emphasize, yet again, that Karl Rove's speech to the Conservative Party of New York is complete evil bullshit. But it's also obviously an example GOP propaganda. We were truly united as a nation back then, but the Republican rhetoric since then brainwashed the electorate to the point of believing that Democrats don't care about terrorism.
Note: Thanks to Kossack stevetat for pointing to the Mystery Pollster's post.