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New polling for key Senate races in Arkansas, New Hampshire

New polling for key races in both Arkansas and New Hampshire could determine control of the Senate.
Sen. Mark Pryor, D-Ark., prepares to speak at a Senate Democratic Steering and Outreach Committee's \"Rural Summit,\" in the Dirksen Senate Office building on April 25, 2013. (Photo By Chris Maddaloni/CQ Roll Call)
Sen. Mark Pryor, D-Ark., prepares to speak at a Senate Democratic Steering and Outreach Committee's \"Rural Summit,\" in the Dirksen Senate Office building on...
By Lisa Crivelli

New polling for key races in both Arkansas and New Hampshire could determine control of the U.S. Senate.

First to Arkansas, where a new poll from CNN and Opinion Research shows Republican challenger Tom Cotton has a two point lead over incumbent democratic Senator Mark Pryor among likely voters.  It's Cotton 49, Pryor 47.

Next, to New Hampshire where a poll by the Republican super PAC American Crossroads shows Democratic Senator Jeanne Shaheen up three over Scott Brown, 44% to 41%.  Brown debated his Republican challengers Thursday ahead of next week's primary.