With South Carolina governor Mark Sanford still wondering how to solve a problem called Maria, and GOP biggies falling by the wayside, a Californian may be poised to now take the reins as the leader of the GOP 2012 possible presidential pack. Mitt Romney, the former Massachusetts governor, now claims the Golden State as his full-time home since he bought a lovely beachfront estate in La Jolla where and wife Ann now reside. [...] Sanford's Maria meltdown has meant that the stash of GOP possible presidential hopefuls and leadeers is shrinking fast -- with some GOPers say Romney now looks...