Democratic voters in Lake Worth, Florida listen to President Obama during the first televised presidential debate, between the president and Republican candidate Mitt Romney. Romney was credited with winning on style, if not on substance. Three further debates are scheduled, including one with vice-presidential candidates. Florida is a key swing state and it's electoral votes could be crucial in determining who is the president, as in 2000. The US presidential election will be held on 6 November, 2012.