How did Senate races in Georgia, New Hampshire become too close to call?
Washington The battle for control of the US Senate is getting messier thanks to tightening races in Georgia and New Hampshire.
New polls show an underdog Democrat in the South and an underdog Republican in New England close on the heels of the favorites in the two states.
These races have become tighter since September, the polls find, even as more than half a dozen other Senate races are too close to call. For now at least, uncertainty seems to be widening rather than diminishing as Election Day gets closer.
In Georgia, a poll taken from Oct. 2 to 6 finds Democrat Michelle Nunn trailing Republican David Perdue by just one percentage point, whereas most September polls showed Mr. Perdue with a lead of three points or more. The two are competing for an open seat, vacated by GOP Sen. Saxby Chambliss.
In New Hampshire, where incumbent Sen. Jeanne Shaheen (D) was leading in one late-September poll by seven points and in another by 10, the most recent polls show the spread at a narrower two, three, or six points (depending on the poll). Shes being challenged by former US Sen. Scott Brown (R), who has migrated to the Granite State from liberal Massachusetts in search of a political reboot.
Republicans need a net gain of six seats to take charge of the Senate. A Brown upset in New Hampshire could count as one of those seats.
Or, if Senator Shaheen holds firm in New Hampshire and Ms. Nunn overtakes Perdue, Republicans would have a steeper climb, needing to gain seven seats rather than six.
What has happened to make these two states more competitive?
Nunn may be gaining some traction by playing up Perdues role in sending US manufacturing jobs overseas during his business career. And Mr. Brown has blasted Shaheen as soft on national defense and in alignment with President Obama on that score while making his own name better known in door-to-door campaigning.
If the underdogs have shown some new strength, though, another factor may simply be the inherent variability in polling. Its hard to know which polls best reflect the people who will actually vote on Nov. 4.
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How did Senate races in Georgia, New Hampshire become too close to call?