<p>Joe Biden will deliver an address to the nation Friday evening as he takes the lead in voting in key states needed to win the US presidential election, a campaign official said.</p>.<p>Biden -- who has stopped short of claiming victory but has been called "president-elect" by House Speaker Nancy Pelosi -- will speak later in the day from his home city of Wilmington, Delaware, the official said on condition of anonymity.</p>
<p>Joe Biden will deliver an address to the nation Friday evening as he takes the lead in voting in key states needed to win the US presidential election, a campaign official said.</p>.<p>Biden -- who has stopped short of claiming victory but has been called "president-elect" by House Speaker Nancy Pelosi -- will speak later in the day from his home city of Wilmington, Delaware, the official said on condition of anonymity.</p>