(Wall Street Journal) — Money talks, but not always loudly enough. In the most expensive midterm campaign in American history, a flood of cash from conservative organizations helped Republicans win control of the House. But the pro-Republican groups didn’t fare as well in the Senate. Unions spent millions to little avail. And a slew of self-funded billionaires and millionaires fell dramatically, and expensively, short. Republican Meg Whitman, the former eBay Inc. chief executive, spent $140 million of her own cash in a bid to be California’s governor, equivalent to about $45 a vote. She lost by 12 points to Democratic Attorney General Jerry Brown.