Peruvian writer Mario Vargas Llosa is pictured during an interview at his home in Madrid on October 7, 2009. This year's Nobel Literature Prize could go to a poet for the first time since 1996, Swedish literary circles say as speculation mounts ahead of Thursday's announcement. A Spanish language author has not won the prize since 1990, so it could also be time for Peru's Mario Vargas Llosa, often mentioned as a possible Nobel winner, to finally clinch the prestigious distinction, according to other experts in Stockholm.