reporter: interesting, hillary clinton was playing what you might call prevent defense. she s goat t to lead now, prett good run in the last couple of weeks, all about not making mistakes on this large stage. and that opened the crowd to over 6,000 iowa democrats, hillary clinton trying to get bigger crowds than she s had across the country. before this speech she had pre-game rally and brought out her husband, the former president and not done a rally yet in the cycle and brought out katy perry who performed a few songs, all about trying to generate excitement and show organizational strength heading into the big jefferson jackson dinner. clinton played it safe and was flat and tried to make it like she wasn t taking on any of the democrats in what is now a shrunken field with vice president biden out and two other candidates dropping out this week.