First, they called Arizona for Biden. Now it’s on knife edge (IANS Explainer)

By Nikhila Natarajan New York, Nov 6 : First, the Associated Press (AP) and Fox News declared Democratic presidential nominee Joe Biden the winner of Arizona. Now, its on razors edge. In this almost ‘knowable but not yet ‘callable US election, an anxious country is watching wild swings in this battleground and the four other biggies where results are yet to be finalised.
In Arizona, less than 300,000 votes remain to be counted. Biden’s lead has shrunk from 9 per cent (when AP called it), to 4.2 per cent and now trending sharply lower. Just about 42,000 votes now separate Biden and President Donald Trump. Arizona delivers 11 electoral votes to the winner.
The final rush of votes favour Trump. He needs to keep winning at around 59 per cent to win the state. At least 94 per cent of the vote is in here. A huge chunk of votes will come in by 9 a.m. EST on Friday – those numbers will be crucial.
So, let’s dial it back a bit. How did we get here, from AP and Fox calling the race for Biden to “too close to call” according to NBC at this hour. And why does it matter? It matters because Trump needs Arizona, he needs Pennsylvania and he needs some combination of the other states to pull off a sensational comeback.
Arizona is essential but not sufficient for Trump, so too Pennsylvania.