Aconservative super PAC is trying to swing Utah voters against Donald Trump in tonight's caucus by slut-shaming his wife Melania Trump. The ad, circulated on social media, shows the former model in a nude 2000 GQ photo shoot with the words: 'Meet Melania Trump, your next First Lady. Or you could vote for Ted Cruz on Tuesday.' Cruz, who has a precarious 50.1per cent polling average, needs to win a majority backing in order to take all 40 of Utah's delegates. Republican strategist Liz Mair, who founded the super PAC Make America Awesome, said that the ads have been targeting...