Make the Road Action, an immigrant rights group, is endorsing Bernie Sanders for president, lending the Vermont senator significant political muscle in the early caucus state of Nevada and a delegate-heavy group of northeastern states.

The 10-year-old organization, which mobilizes immigrants and minority communities for political action in Connecticut, Nevada, New Jersey, New York and Pennsylvania, has not previously endorsed candidates in presidential races. But the endorsement of Sanders, provided first to POLITICO, comes after a months-long process of evaluating Democratic campaign platforms and holding meetings with a number of candidates.