If Barack Obama sweeps today's primaries, it's looking even more likely that he'll have a 10-race winning streak going into the mega-primary on March 4 that Hillary Clinton is banking on.
A new poll out today in Wisconsin shows that Obama has a 50 percent to 39 percent lead over Clinton, boosted by a 21-percentage-point edge among voters most concerned by the Iraq war.
Obama argues that he would be the better nominee against all-but presumptive Republican nominee John McCain on the issue because he opposed the war from the start, while Clinton authorized military action, though she says that President Bush went beyond the authorization by launching a pre-emptive war.
While Obama leads among both black and white voters and holds a significant edge among independents, he and Clinton are virtually tied among self-identified Democrats, according to the Public Policy Polling survey conducted Monday.
Wisconsin -- which votes next Tuesday along with Hawaii, where Obama grew up -- holds an open primary, where voters, no matter how they're registered, can choose to vote in either primary.
In the Republican race, McCain leads Mike Huckabee 53 percent to 32 percent, according to the poll.