Depends on the meaning of "anti-war"
The nutroots don't have as much clout as they'd like to think, at least with normal America. From NRO:
Some interesting polling results in recent days. For example:
According to a recent USA Today/Gallup poll, 61% of Americans oppose “denying the funding needed to send any additional U.S. troops to Iraq,” and opposition is up from 58% in February. (3/23-25, 2007). A Bloomberg poll reveals 61% of Americans believe withholding funding for the war is a bad idea, while only 28% believe it is a good idea (3/3-11, 2007). (28% hardly seems like a mandate, Kostards. And by "mandate", I don't mean Barney Frank's plans for the weekend. - Ed.) A recent Public Opinion Strategies (POS) poll found that 56% of registered voters favor fully funding the war in Iraq, with more voters strongly favoring funding (40%) than totally opposing it (38%); (3/25-27, 2007). POS found also that a majority of voters (54%) oppose the Democrats imposing a reduction in troops below the level military commanders requested (3/25-27, 2007). A separate POS poll finds 57% of voters support staying in Iraq until the job is finished and “the Iraqi government can maintain control and provide security for its people.” And 59% of voters say pulling out of Iraq immediately would do more to harm America’s reputation in the world than staying until order is restored (35%); (2/5-7, 2007). A Fox News/Opinion Dynamics poll show 69% of American voters trust military commanders more than members of Congress (18%) to decide when United States troops should leave Iraq. This includes 52% of Democrats, 69% of Independents and 88% of Republicans (3/27-28, 2007). According to a recent Pew Research survey, only 17% of Americans want an immediate withdrawal of troops (4/18-22, 2007). That same poll found a plurality of adults (45%) believe a terrorist attack against the United States is more likely if we withdraw our troops from Iraq while the “country remains unstable” Should a date for withdrawal be set, 70% of American believe it is likely that “insurgents will increase their attacks in Iraq” starting on that day. This is supported by 85% of Republicans, 71% of Independents and 60% of Democrats. (FOX News/Opinion Dynamics, 4/17-18, 2007). An LA Times/Bloomberg polls reveals that 50% of Americans say setting a timetable for withdrawal of U.S. troops from Iraq “hurts” the troops, while only 27% believe it “helps” the troops (4/5-9, 2007). (But hey, Vince N. knows seven guys who want out now, so this stat MUST be wrong! - Ed.)
Americans want a change in strategy in Iraq, but they don't want to cut-and-run before the military (and NOT Congress) says that job is done...and that includes surrender, er "withdrawal", deadlines.