With Republicans rallying to his cause, Gov. Arnold Schwarzenegger has reclaimed a little more of his once-astronomical popularity, but winning re-election could still prove to be a tough slog. A poll released Tuesday by the Survey and Policy Research Institute at San Jose State University saw Schwarzenegger's approval rating climb to 45 percent among voters, up from 39 percent in January. Most of that momentum is fueled by higher rankings among the GOP faithful, some of whom had been alienated by the Republican governor's more centrist actions, and Democratic hires, since last year's failed special election. But Republicans seem to...