Challenger: Republican Andrew Harris, Maryland’s 1st District ($531,000 raised, $402,000 cash-on-hand)
Incumbent: Rep. Wayne T. Gilchrest ($174,000 raised, $414,000 cash-on-hand)
Primary date: February 12
Challenger: Republican Phil Heimlich, Ohio’s 2nd District ($276,000 raised, $218,000 cash-on-hand)
Incumbent: Rep. Jean Schmidt ($244,000 raised, $108,000 cash-on-hand)
Primary date: March 4
Challenger: Republican Barry Fleming, Georgia’s 10th District ($273,000 raised, $269,000 cash-on-hand)
Incumbent: Rep. Paul Broun ($477,000 raised, $35,000 cash-on-hand)
Primary date: July 15
Challenger: Democrat Mark Pera, Illinois’ 3rd District ($240,000 raised, $181,000 cash-on-hand)
Incumbent: Rep. Dan Lipinski ($305,000 raised, $321,000 cash-on-hand)
Primary: February 5
Challenger: Democrat Ben Graber, Florida’s 19th District ($226,000 raised, $1,345 cash-on-hand)
Incumbent: Rep. Robert Wexler ($1.1 million raised, $1.3 million cash-on-hand)
Primary: August 26
Challenger: Democrat Donna Edwards, Maryland’s 4th District ($214,000 raised, $116,000 in cash-on-hand)
Incumbent: Rep. Albert R. Wynn ($593,000 raised, $400,000 cash-on-hand)
Primary: February 12
Challenger: Republican John McGoff, Indiana’s 5th District ($190,000 raised, $82,000 cash-on-hand)
Incumbent: Rep. Dan Burton ($447,000 raised, $871,000 cash-on-hand)
Primary: May 6
Challenger: Democrat Nikki Tinker, Tennessee’s 9th District ($171,000 raised, $172,000 cash-on-hand)
Incumbent: Rep. Steve Cohen ($268,000 raised, $374,000 cash-on-hand)
Primary: August 7
Challenger: Republican Todd Long, Florida’s 8th District ($137,000 raised, $40,000 cash-on-hand)
Incumbent: Rep. Ric Keller ($393,000 raised, $466,000 cash-on-hand)
Primary: August 26
Challenger: Republican David O. Leavitt, Utah’s 3rd District ($110,000 raised, $95,000 cash-on-hand)
Incumbent: Rep. Chris Cannon ($262,000 raised, $40,000 cash-on-hand)
Primary: June 24