President Joe Biden is trailing former President Donald Trump, according to a new poll of likely voters.AP Photo/Alex Brandon, File; AP Photo/Susan Walsh, FileThe latest New York Times/Siena College poll shows Trump leading Biden 48%-44% among likely voters.The numbers show Biden lagging not only with his 2020 supporters but also female voters.Biden also has to overcome doubts about the economy, as 50% of voters in the poll called it "poor."Eigh…