Here’s a sure sign that commercial real estate broker Chris Riggs is planning to challenge Rep. Ken Calvert in the Republican primary next year: Riggs in recent days has launched Twitter and Facebook sites, and he has also begun to hire consultants and campaign staff. “This race will be a litmus test to see if all the millions of ‘tea party’ attendees across America are really serious about electing officials that run on a limited government, tax lowering platform, as this will be a perfect opportunity to pick off a big tax-and-spend incumbent,” Riggs told the Orange County Register this...