Obama and McCain win big in Wisconsin primary

Obama's Wisconsin win pushed his hot streak to nine straight victories in Democratic nominating contests. .

Republican front-runner John McCain also won in Wisconsin, and then later in Washington state, taking another big step toward becoming his party's nominee in the presidential election.

As the results rolled in, both Democrats looked ahead to March 4 showdowns in two of the biggest states, Texas and Ohio, which have a rich lode of 334 convention delegates at stake and where Clinton desperately needs to win.

"The change we seek is still months and miles away, and we need the good people of Texas to help get us there," Obama said at a rally in Houston after noting his win in