Freshmen Republicans will be watching their right flanks over the next few days as they evaluate the budget and spending deal struck late Friday between congressional leaders and the White House.

Several outspoken House conservatives, led by Reps. Michele BachmannMichele Marie BachmannMellman: The 'lane theory' is the wrong lane to be in White House backs Stephen Miller amid white nationalist allegations Klobuchar urges CNN town hall audience: 'That's when you guys are supposed to cheer, OK?' MORE (Minn.) and Steve King (Iowa), denounced the long-term plan quickly, saying it falls well below their desired level of spending cuts and fails to defund healthcare reform.

Other House Republicans, including a slew of freshman members, expressed deep skepticism of the deal that will cut $38 billion in actual spending. That's $22 billion less than the bill the House passed in February.

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"It really does boil down to your credibility and the trust and confidence the American people have in you," said Rep. Allen West (R-Fla.), who added that he would be a no vote on the spending plan.

"The question I would be asking now if I was on the outside looking in is 'Can these guys really hold the line and turn around this fiscal situation?'" West said.

As part of the deal, Democrats knocked off most of the controversial policy riders that House Republicans had included in H.R. 1, the package of spending cuts that passed in February.

Republicans, however, won the inclusion of a rider to expand the District of Columbia’s school voucher program and to authorize a Government Accountability Office study of a financial oversight board established by the Wall Street reform bill.

Most significantly, Democrats won the disagreement over funding that included Planned Parenthood, which provides abortion services.

Other freshmen members said early Saturday that they're taking a wait-and-see approach on the longer-term part of the deal, expressing some disappointment at the $38 billion figure, but not yet ruling out supporting the plan.

"I want to support the Speaker and I know he worked as hard as he could to get the best deal he possibly could," said Rep. Chip Cravaack (R-Minn.). "But I need to see all the details first." 

Some conservative groups are taking the same approach and holding their fire until the full details of the spending plan emerge. Groups such as the Club for Growth and the Heritage Foundation, both of which denounced the idea of any additional short-term spending measures last month, have yet to weigh in fully on Friday's compromise.

Cravaack said he and a number of his fellow freshmen members emerged from Friday night's closed-door caucus meeting "wanting to believe in [the deal]," but Cravaack said he's an "eternal pessimist" and would withhold judgment until he had more time to pore over the details.

Still, Tea Party-backed members know they will have some convincing to do if they opt to vote for the long-term budget agreement.

"I wish it were more, but I told my freshmen class in one of our meetings, 'Hold your nose and vote for it,'" said Rep. Renee Ellmers (R-N.C.). "And yeah, there's going to be some backlash back home, but I'm ready for it."

Ellmers and several other freshman Republicans said early Saturday that as disappointed as they may have been about the $38 billion number, they're eager to move on to what they view as the real fight — Rep. Paul RyanPaul Davis RyanHouse Ethics Committee informs Duncan Hunter he can no longer vote after guilty plea Duncan Hunter pleads guilty after changing plea Trump campaign steps up attacks on Biden MORE's (R-Wis.) proposed budget.

"If you get two-thirds of what you want when you control just a third of the three levers, I think you're not in bad shape," Rep. Tim ScottTimothy (Tim) Eugene ScottTrump to sign order penalizing colleges over perceived anti-Semitism on campus: report Here are the Senate Republicans who could vote to convict Trump GOP senators unveil bill to expand 'opportunity zone' reporting requirements MORE (R-S.C.) said of the long-term deal. "That doesn't mean that I'm gonna vote for it, though."

Electorally, some freshman Republicans could have double the trouble in 2012 if they don't keep the conservative base of their party satisfied.

Several, like West, are in competitive districts and could be Democratic targets in next year's general election. Tea Party activists, meanwhile, have threatened primary challenges to Republican members who don't hold the line on spending cuts. The deal struck late Friday falls well below the level of cuts most conservatives have cited as only a starting point.

Rep. Michael Grimm (R-N.Y.), who defeated Democrat Michael McMahon in a swing district in 2010 and has already taken heat from Tea Party backers in his home district, said he expects conservatives will be disappointed by the deal but suggested "it might be because they had unreasonable expectations."

"Overall, when you look at this, it's a tremendous victory, and America has to see that," said Grimm. "I know we wanted more, and if we controlled the Senate and the White House, there would be no excuse for falling a little short. But now we can move on to the next fight, which is the budget."

- Molly K. Hooper contributed to this report.