Fox News politics editor Chris Stirewalt said President Trump cannot afford to look like he's "capitulating" in his demand for a border wall.

President Trump said Friday that he will support a short-term spending bill to re-open the government, temporarily ending the partial government shutdown that has dragged on for more than a month

He said the deal would keep the government open for three weeks until Feb. 15 and that a bill would go before the Senate immediately.

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The deal appeared to include no money for a wall or steel barrier, but he said he hoped negotiations would continue to come to an agreement on the funding.

On "The Daily Briefing" Friday, Dana Perino noted that a new ABC News/Washington Post poll shows Trump's approval rating at 37 percent, with 58 percent disapproval, which she noted is "one of the lowest" approval ratings he's had.

"To this point, the president's base has stayed with him. ... He hasn't started to eat into his base," Stirewalt said, estimating the number to be around 35 to 40 percent of voters.

"Those folks believe that he is fighting for them and fighting for this wall. That's why whatever he says today, he's not going to be able to get it back with persuadable voters, necessarily. He has to make sure that what he's doing here does not cost him with these core supporters, who will think that he's betrayed them if he's capitulating."

Ann Coulter responded on Twitter by labeling Trump a "wimp."

Watch more from Stirewalt above.

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