(CNN) — Demand has doubled at a Washington, DC, food bank over the past few weeks, while another in Texas has been forced to dip into emergency hurricane reserve funds to meet demand. Meanwhile, a Florida charity is giving out 300,000 meals per day but, an official there says, “still it’s not enough.”

After a nearly monthlong government shutdown , the looming suspension of federal food benefits in November is poised to put millions of Americans at risk of going hungry — and food banks and other charities across the country face a bleak outlook as they head into a busy holiday season.

More than a dozen large and small charitable nonprofits told CNN they have exceeded their ability to help and warned that the level of support they can provide will fall far short.

“The real impacts ar

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