President Donald Trump and Democratic challenger Joe Biden are battling it out for the White House, with polls closed across the United States -- and the American people waiting for results in key battlegrounds still up for grabs. There are seven states still left uncalled, including major prizes such as Pennsylvania and Wisconsin -- meaning both Trump and Biden still have a path to victory. US media outlets have projected wins for the Republican incumbent in 23 states including big prizes Florida and Texas, as well as Indiana, Kentucky, Missouri and Ohio -- all states he won in 2016.