Americans For Prosperity has launched a "Naughty or Nice" list to highlight lawmakers the conservative group says are either on the wrong or right side of the tax reform debate.

The "naughty" list reads like a roster of lawmakers likely to face primary challenges from the right, largely because of their positions on tax increases or spending cuts. 

It includes Sens. Saxby ChamblissClarence (Saxby) Saxby ChamblissLobbying World Former GOP senator: Let Dems engage on healthcare bill OPINION: Left-wing politics will be the demise of the Democratic Party MORE (R-Ga.), Bob CorkerRobert (Bob) Phillips CorkerSenate campaign fundraising reports roll in Congress should take the lead on reworking a successful Iran deal North Korea tensions ease ahead of Winter Olympics MORE (R-Tenn.), Dick DurbinRichard (Dick) Joseph DurbinMcCarthy: ‘No deadline on DACA’ Ex-Sheriff David Clarke: Trump only one who 'cares about black American citizens' DHS chief takes heat over Trump furor MORE (D-Ill.), Lindsey GrahamLindsey Olin GrahamDHS chief takes heat over Trump furor Overnight Defense: GOP chair blames Dems for defense budget holdup | FDA, Pentagon to speed approval of battlefield drugs | Mattis calls North Korea situation 'sobering' Bipartisan group to introduce DACA bill in House MORE (R-S.C.) and Patty MurrayPatricia (Patty) Lynn MurrayCDC director to miss fourth hearing because of potential ethics issues Week ahead: Lawmakers near deal on children's health funding Ryan suggests room for bipartisanship on ObamaCare MORE (D-Wash.), as well as Reps. Tom Cole (R-Okla.), Peter DeFazio (D-Ore.), Pete King (R-Iowa) and Chris Van Hollen (D-Md.).

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Chambliss recently pushed back against Grover Norquist's no-tax pledge and in doing so indicated he might be open to raising taxes on wealthy Americans, a plank of President Obama's deal to avert the "fiscal cliff" that Republicans have thus far refused to accept. 

The Georgia Republican, however, was vulnerable long before his comments on the no-tax pledge because of his work across the aisle on immigration and the federal debt.

Graham, too, said he'd be willing to violate the Norquist pledge and has long been in conservative crosshairs for his initial work with Democrats on immigration and climate-change legislation, as well as his votes for Obama's Supreme Court nominees.

Cole has been targeted by Americans for Tax Reform previously because of his comments in favor of a deal proposed by Obama to avert the fiscal cliff. And King indicated recently he doesn't feel bound to the Norquist pledge.

The "nice" list features no Democrats. It includes Sens. Jim DeMint (R-S.C.), Pat Toomey (R-Pa.), Jeff SessionsJefferson (Jeff) Beauregard SessionsSessions: 'We should be like Canada' in how we take in immigrants DOJ wades into archdiocese fight for ads on DC buses Overnight Cybersecurity: Bipartisan bill aims to deter election interference | Russian hackers target Senate | House Intel panel subpoenas Bannon | DHS giving 'active defense' cyber tools to private sector MORE (R-Ala.) and Rand PaulRandal (Rand) Howard PaulNSA spying program overcomes key Senate hurdle Fix what we’ve got and make Medicare right this year Despite amnesty, DACA bill favors American wage-earners MORE (R-Ky.), as well as Reps. Scott GarrettErnest (Scott) Scott GarrettManufacturers press Senate to approve Ex-Im board members Let's hope Republicans use the new year to get moving on Trump's nominees Now is the time to fix Ex-Im Bank MORE (R-N.J.), Jim Jordan (R-Ohio), Mick Mulvaney (R-S.C.), Mike Pompeo (R-Kan.) and Steve Scalise (R-La.).

Most on the nice list have the backing of the Tea Party and are staunch fiscal conservatives.

DeMint will resign in January to join the conservative Heritage Foundation, and Mulvaney is a possible contender for the seat.