In a general head-to-head matchup between President Joe Biden, 79, and his predecessor Donald Trump, 76, the incumbent Democrat would emerge victorious, a new poll shows. This is the first time a Yahoo News/YouGov poll has shown Biden besting Trump by 6 percent or more in six months – as the spring and summer saw months-long economic decline with record high gas prices, record high inflation and the country dipping into a recession with two straight quarters of negative GDP growth. Of the 1,634 respondents, 1,247 are registered voters and would be eligible to vote in a presidential election if...