(CNN) — Several Senate Democrats are signaling a willingness to vote to reopen the government if they secure some final key concessions from the White House, a sign that a major breakthrough could be within reach amid the longest shutdown in US history, according to a person involved in the talks.

The emerging deal would include a new stopgap measure to extend government funding until January and be tied to a larger package to fully fund several key agencies.

The broader legislation would include three full-year appropriations bills that deal with military construction and veterans affairs, the legislative branch and the Department of Agriculture. That includes $203.5 million in new funding to enhance security measures and protection for members of Congress in addition to $852 million f

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