Democratic presidential candidate Hillary Clinton (Xinhuanet file photo)

WASHINGTON, Feb. 20 -- Democratic presidential candidate Hillary Clintonon Saturday snatched a key victory in Nevada Democratic caucuses days before the crucial "Super Tuesday" round on March 1, according to projections by major U.S. TV networks.

With 79.2 percent of the precincts reporting, Clinton led Bernie Sanders 52.1 percent to 47.8 percent, prompting almost all U.S. major TV networks to project that Clinton won in Nevada.

The modest victory was crucial to Clinton after the former first lady suffered erosion of supports nationwide in the wake of a near tie in Iowa and a stinging 22-point loss in New Hampshire.