Biden Leads in <br />Four Key States as Election Nears, Poll Reveals.<br />The new Times / Siena College poll <br />shows former Vice President Joe Biden <br />leading over President Donald Trump .<br />in the battleground states of Wisconsin, <br />Pennsylvania, Florida and Arizona.<br />The poll shows Biden leading Trump <br />in Wisconsin by 11 points, <br />52 percent to Trump's 41 percent.<br />Biden's lead in Florida is the smallest of the <br />four states, where Trump trails by three points. <br />The margin of error of the poll is 3.2 percent.<br />The poll shows both Arizona and Pennsylvania <br />as a six-point lead for Biden.<br />According to analysts, <br />if Biden were to hold these states, <br />Trump's path to reelection will be narrow. .<br />Early voting and mail-in ballots already <br />account for 90 million votes cast. .<br />Of the four battleground states in which Biden leads, <br />a majority of voters have cast their votes in three
