Former staffers for defeated California candidates Meg Whitman and Carly Fiorina have an urgent message for fellow Republicans: Their political future depends on Latino voters, and the Obama administration may be providing an opening. (snip) Mr. Wilson, managing partner at Wilson-Miller Communications Inc. in Sacramento, said that if the topic of immigration arises, Republicans should avoid anti-immigration rhetoric meant to stir up the conservative base. "We're on safe ground when we say, 'We have to secure our borders and get a guest-worker program, then work on a pathway for citizenship for people who are already here'—and then quickly pivot off...