Progressive grassroots groups are blasting congressional Democrats on speed dial to "hold the line" in any negotiations to reopen the government.

Why it matters: That pressure campaign will make it more difficult for Democrats to compromise with Republicans to end the shutdown. • Senate Minority Leader Chuck Schumer (D-N.Y.) has been closely coordinating his shutdown strategy with outside liberal groups, Axios scooped last week. • But the groups are clearly playing an inside-outside game and are using their volunteers to dissuade Democrats from compromising.

Driving the news: The Working Families Party and MoveOn are ginning up their phone and text banks for their activists to pressure their senators. • "I'm calling to encourage Senator _________ to hold the line during this shutdo

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