sample caption left - images taken by nytimesSenator Barack Obama decisively beat Senator Hillary Rodham Clinton in the Wisconsin primary and the Hawaii caucuses on Tuesday night, accelerating his momentum ahead of crucial primaries in Ohio and Texas and cutting into Mrs. Clinton’s support among women and union members. With the two rivals now battling state by state over margins of victory and allotment of delegates, surveys of voters leaving the Wisconsin polls showed Mr. Obama, of Illinois, making new inroads with those two groups as well as middle-age voters and continuing to win support from white men and younger voters — a performance that yielded grim tidings for Mrs. Clinton, of New York.

On the Republican side, Senator John McCain of Arizona won a commanding victory over Mike Huckabee in the Wisconsin contest and led by a wide margin in Washington State. All but assured of his party’s nomination, Mr. McCain immediately went after Mr. Obama during a rally in Ohio, deriding “eloquent but empty” calls for change.

For Mr. Obama, Hawaii was his 10th consecutive victory, a streak in which he has not only run up big margins in many states but also pulled votes from once-stalwart supporters of Mrs. Clinton, like low- and middle-income people and women.

Mrs. Clinton wasted no time in signaling that she would now take a tougher line against Mr. Obama — a recognition, her advisers said, that she must act to alter the course of the campaign and define Mr. Obama on her terms. sample caption right - images taken by nytimesSenator Barack Obama decisively beat Senator Hillary Rodham Clinton in the Wisconsin primary and the Hawaii caucuses on Tuesday night, accelerating his momentum ahead of crucial primaries in Ohio and Texas and cutting into Mrs. Clinton’s support among women and union members. With the two rivals now battling state by state over margins of victory and allotment of delegates, surveys of voters leaving the Wisconsin polls showed Mr. Obama, of Illinois, making new inroads with those two groups as well as middle-age voters and continuing to win support from white men and younger voters — a performance that yielded grim tidings for Mrs. Clinton, of New York.

On the Republican side, Senator John McCain of Arizona won a commanding victory over Mike Huckabee in the Wisconsin contest and led by a wide margin in Washington State. All but assured of his party’s nomination, Mr. McCain immediately went after Mr. Obama during a rally in Ohio, deriding “eloquent but empty” calls for change.

For Mr. Obama, Hawaii was his 10th consecutive victory, a streak in which he has not only run up big margins in many states but also pulled votes from once-stalwart supporters of Mrs. Clinton, like low- and middle-income people and women.

Mrs. Clinton wasted no time in signaling that she would now take a tougher line against Mr. Obama — a recognition, her advisers said, that she must act to alter the course of the campaign and define Mr. Obama on her terms

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