President Barack Obama has widened his considerable lead over Mitt Romney among registered Latino voters in five key swing states, according to a new poll of 2,000 voters by Latino Decisions and the pro-immigration reform advocacy group America's Voice. Obama enjoys the biggest lead among Latino voters in Arizona, 74 percent of whom say they favor the president over Romney. On average, Obama is leading Romney 63 to 27 percent among Latinos in Arizona, Colorado, Florida, Nevada and Virginia. Analysts estimate that Romney would need at least 40 percent of the Latino vote overall to win the general election, although...