In a lively campaign weekend, Romney trades more shots with Gingrich, who in turn is lampooned on 'Saturday Night Live.'In one of the more colorful weekends of the Republican presidential campaign, results from the Nevada caucuses remained incomplete Sunday while officials recounted ballots in the state's most populous county; "Saturday Night Live" mocked Newt Gingrich as "Moon President"; Ron Paul supporters crashed a special nighttime voting site for people who had observed the Sabbath; and Rick Santorum toured the factory that knits his signature sweater vests.