District: AK Senate
Incumbent: Mark Begich (D)
Open Seat?: N
Rothenberg Rating: Toss-up/Tilt Republican
All Candidates' Fundraising: $16,110,039
All Candidates' Spending: $14,849,131
Outside Spending: $36,636,518
Total Spending: $51,485,649
2012 Presidential Turnout: 300,495
Outside Dollars Per Voter: $121.92
District: NH Senate
Incumbent: Jeanne Shaheen (D)
Open Seat?: N
Rothenberg Rating: Toss-up/Tilt Democrat
All Candidates' Fundraising: $17,687,300
All Candidates' Spending: $11,794,443
Outside Spending: $24,330,577
Total Spending: $36,125,020
2012 Presidential Turnout: 710,972
Outside Dollars Per Voter: $34.22
District: AR Senate
Incumbent: Mark L. Pryor (D)
Open Seat?: N
Rothenberg Rating: Lean Republican
All Candidates' Fundraising: $17,370,181
All Candidates' Spending: $15,449,828
Outside Spending: $35,181,956
Total Spending: $50,631,783
2012 Presidential Turnout: 1,069,468
Outside Dollars Per Voter: $32.90
District: IA Senate
Incumbent: Tom Harkin (D)
Open Seat?: Y
Rothenberg Rating: Pure Toss-up
All Candidates' Fundraising: $25,961,540
All Candidates' Spending: $20,972,596
Outside Spending: $51,312,884
Total Spending: $72,285,479
2012 Presidential Turnout: 1,582,180
Outside Dollars Per Voter: $32.43
District: CO Senate
Incumbent: Mark Udall (D)
Open Seat?: N
Rothenberg Rating: Pure Toss-up
All Candidates' Fundraising: $25,925,194
All Candidates' Spending: $22,248,286
Outside Spending: $57,173,921
Total Spending: $79,422,207
2012 Presidential Turnout: 2,569,522
Outside Dollars Per Voter: $22.25
District: KY Senate
Incumbent: Mitch McConnell (R)
Open Seat?: N
Rothenberg Rating: Lean Republican
All Candidates' Fundraising: $38,767,900
All Candidates' Spending: $36,639,825
Outside Spending: $30,848,427
Total Spending: $67,488,252
2012 Presidential Turnout: 1,797,212
Outside Dollars Per Voter: $17.16
District: NC Senate
Incumbent: Kay R. Hagan (D)
Open Seat?: N
Rothenberg Rating: Toss-up/Tilt Democrat
All Candidates' Fundraising: $29,991,420
All Candidates' Spending: $27,060,033
Outside Spending: $67,483,111
Total Spending: $94,543,144
2012 Presidential Turnout: 4,505,372
Outside Dollars Per Voter: $14.98
District: LA Senate
Incumbent: Mary L. Landrieu (D)
Open Seat?: N
Rothenberg Rating: Toss-up/Tilt Republican
All Candidates' Fundraising: $27,201,671
All Candidates' Spending: $20,510,044
Outside Spending: $14,913,578
Total Spending: $35,423,622
2012 Presidential Turnout: 1,994,065
Outside Dollars Per Voter: $7.48
District: MI Senate
Incumbent: Carl Levin (D)
Open Seat?: Y
Rothenberg Rating: Democrat Favored
All Candidates' Fundraising: $20,054,662
All Candidates' Spending: $15,902,751
Outside Spending: $27,175,329
Total Spending: $43,078,081
2012 Presidential Turnout: 4,730,961
Outside Dollars Per Voter: $5.74
District: GA Senate
Incumbent: Saxby Chambliss (R)
Open Seat?: Y
Rothenberg Rating: Lean Republican
All Candidates' Fundraising: $32,080,690
All Candidates' Spending: $27,066,586
Outside Spending: $20,692,987
Total Spending: $47,759,573
2012 Presidential Turnout: 3,900,050
Outside Dollars Per Voter: $5.31