* Republicans are opposed 55-43--a similar 12 point gap.
* The fiercest opposition is among independents, who disapprove of intervention by a 66-30 margin. That figure suggests that members of Congress who represent swing districts might actually be more vulnerable if they vote to authorize the attack.
In addition to being broad-based, the opposition sentiment runs deep. Even if US allies such as Britain and France join in, a 51-46 majority is still opposed to missile strikes.
The idea of going further and trying to topple the Syrian regime appears to be a political non-starter. Seventy percent of those surveyed oppose supplying weapons to the Syrian rebels, while just 30 percent support the proposal that has been floated by President Obama and Republican hawks such as Arizona Senator John McCain.
What is especially notable about the polling data is the intensity of opposition to any sort of intervention -- including missile strikes targeted at suspected chemical weapons sites -- among groups that lean Democratic at election time.
* Sixty-five percent of women surveyed for The Post/ABC poll oppose missile strikes, while just 30 percent favor them. (The Pew survey found an even lower level of support among women: just 19 percent)
* Among Americans under age 40 who were surveyed for the Post/ABC poll, 65 percent are opposed.
* Among Hispanics, 63 percent are opposed.
* Among African-Americans, 56 percent are opposed.
On the question of arming the rebels, opposition numbers skyrocket.
* Seventy-six percent of women surveyed for the Post/ABC poll are opposed.
* Seventy-four percent of those under age 40 are opposed.
* Seventy-three percent of African-Americans are opposed.
Regionally, the Democratic-leaning states of the Midwest and the Northeast are more opposed than the Republican-leaning states of the South.
It is true that foreign policy is not always made on the basis of polling data. It is true that patterns of war weariness and concern about how to address the use of chemical weapons makes the current circumstance volatile. And it is true that poll numbers can change. But it is worth noting that discomfort with launching air strikes -- let alone any other intervention -- is running strong among voters who have followed the story closely and among voters who have only recently begun to engage with it. Pew reports that "opposition to the idea is prevalent regardless of people's level of interest -- nearly half oppose airstrikes among the most and least attentive segments of the public."
Or, as the Washington Post analysis puts it: "there is deep opposition among every political and demographic group in the survey."
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