Efrain Robles can’t cast a ballot, but that doesn’t mean he
can’t rock the vote  The guy can't even cast his own ballot. But
Efrain Robles still rocks the vote. Big-time.  Robles, a Phoenix
resident from Mexico, is here legally. But he's not a
naturalized citizen, so technically, he can't vote. That doesn't
mean he can't get his voice heard. He tried it four years ago,
as a volunteer with the Kerry presidential campaign.  "I got
about 10 people to vote who weren't gonna vote in 2004," says
Robles, whose day job is as a market research analyst for a
Phoenix helicopter manufacturer. "That's not a lot, but that's
nine more than just me."  He'll pound the pavement for another
presidential candidate again this election season. This time,
it's Barack Obama.  Robles' sidewalk stumping demonstrates how
the brown vote might just make a difference this year.  I told
Earl DeBerge, a Phoenix pollster, about Robles. He was
impressed. "He's a very smart man," DeBerge says. "There are so
many ways to vote. People will respo