According to a new poll from CNN President Donald Trump is closing the gap against challenger, democrat Joe Biden. CNN Poll of Polls shows Biden leads Trump by just nine-point margin nationally. Biden is set to accept the Democratic nomination later this week. He is backed by 51% of registered voters nationwide, while 42% support Trump. The CNN poll conducted by SSRS released Sunday found Biden with 50% support and Trump at 46%. The Poll of Polls margin is bigger when averaged with other recent polls which showed lower support for Trump.