Conflicting polling in the race has made it difficult to lock down just how the electorate feels about another Nelson term.

A Republican firm last week released a poll showing Nelson down by six points against the current GOP front-runner, Nebraska Attorney General Jon Bruning. But an internal poll from Nelson's campaign the same week showed him two points ahead of Bruning — and with even greater margins over Don Stenberg and Deb FischerDebra (Deb) Strobel FischerBill to bolster gun background checks gains enough support to break filibuster Senate Republicans call on Trump to preserve NAFTA US trade deficit rises on record imports from China MORE, the other Republicans in the race.