The leader of the National Republican Congressional Committee (NRCC) sent a memo to all House Republicans Saturday with an “urgent call to arms” that Democrats are trying to “steal” Tuesday’s special election for California’s 25th Congressional District seat, Fox News has learned. President Trump echoed the concerns of NRCC Chairman Tom Emmer, R-Minn., on Twitter Saturday and blasted the “rigged election” in the northern Los Angeles County district. “Governor [Gavin Newsom] of California won’t let restaurants, beaches and stores open, but he installs a voting booth system in a highly Democrat area (supposed to be mail in ballots only) because...