so many that believe icalivat and it's interesting topwilereso that may affect their votes. >> the polls show growing support but some opposi still a divisive isue. still a politically y mo more politi now ron paul's entii the texas congressman has sply run out of csh for delegates, taking the battle to the gop convention this summer in tampa. but he's not going to campaign in states that have yet to have a primary vote. the defenses in the john edwards trial got off to a rocky start after the judge refused to allow testimony from a key witness. other major witnesses may be called as abc's bob woodruff reports. >> reporter: john edwards' high-powered legal team launched his defense and refused to tip their hand on what could be one of their toughest decisions. whether to call rielle hunter, edwards' former girlfriend, to the witness stand. she's been lying low for months but we saw new pictures of her and her 4-year-old daughter with the former presidential candidate. hunter is the central figure in