Romney generates $12 mil in online contributions + surge in volunteers & crowds at events.

Mitt Romney's strong debate performance Wednesday night has generated $12 million in online contributions, his campaign said, as well as a surge in volunteers and bigger crowds at his events.

The $12 million the campaign reports raising in less than 48 hours after the debate tops the amount Mr. Romney raised in the days after announcing Rep. Paul Ryan, R.-Wis., as his running mate and the Supreme Court's decision to uphold a major plank of the president's health-care law. Sixty percent of the money came from first-time donors, the campaign said, according to The Wall Street Journal.

Mr. Romney's debate performance triggered additional volunteers for the GOP's next national turnout drive on Saturday. The number of people who signed up to volunteer to make calls, knock on doors and sign up supporters for Mr. Romney has shot up by nearly 63% since Wednesday night, campaign officials said. The Republican National Committee, working in conjunction with the Romney campaign and its various state parties, expects to contact nearly two million voters on Saturday and roughly five million for the week. (Continues)