Frustrated by the lack of a more liberal alternative to Hillary Clinton in the 2016 presidential race, progressive groups are planning to hold an event Saturday in New Hampshire to call on Sen. Elizabeth Warren, D-Mass., to jump into the presidential race.

Moveon.org and the Howard Dean-founded group Democracy For America will host the event, dubbed "Run Warren Run" in Manchester. The two groups have been attempting for several weeks to persuade Warren to reconsider her refusal to run by showing her that there is grassroots support for such an effort.

"[M]any in the Democratic Party are hungry for Elizabeth Warren to run for president. Not only is Senator Warren able to marshall the grassroots energy to achieve what too many in Washington say is impossible, but if she were president Wall Street bankers wouldn't be at the helm of our economic policy in the first place," said Charles Chamberlain, executive director of Democracy for America.

The organizations have hired staff and will be opening offices in the Granite State. They plan similar efforts in other states key to the presidential race like Iowa. The groups will recruit volunteers as well as produce ads and videos making the case for the senator's liberal economic positions. They previously pledged to raise more than $1 million for the effort.

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