Former Massachusetts Gov. Mitt Romney pulled in an eye-popping $10.3 million during a national fundraising effort Monday that he described as the kick-off to his campaign for the Republican presidential nomination in 2012. The event was staged at the Las Vegas Convention Center, and the site was no accident: Nevada is key to Romney's early primary state strategy. Nearly 800 participants dialed for dollars all day and hauled in nearly $4 million more than when his campaign staged a similar event four years earlier. Romney has been scarce on the campaign trail in recent months as he's focused heavily on...