[sparklite2]

Gallup reports the partisan split in America as 46 D 40 R and 14 I.

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As of June 5, Gallup surveys showed Democrats 30, Republicans 27. Two years ago, D 29 R 24. Twelve years ago, D 28 R 32.

http://www.gallup.com/poll/15370/party-affiliation.aspx

[Red Steel]

The last presidential and Cong. election exit polls showed this:

Self party ID.

2004 Even D 37 R 37 I 26
2008 D+7 D 39 R 32 I 29
2010 Even D 35 R 35 I 29
2012 D+6 D 38 R 32 I 29
2014 R+1 D 35 R 36 I 28