on this sunday night, the final 48 hours in the race for president. a frantic final push on the campaign trail, obama and romney making a mad dash through the swing states. meantime, tempers flare. tonight a final poll on where this race stands and how sandy could impact the election. plus the new big storm closing in threatening to disrupt a massive recovery operation. and making a difference, the marathon may be off, but the race is on to help some of the hardest hit victims of the storm. from our election home, "nightly news" begins now.