TRENTON, N.J. - Gov. Phil Murphy says New Jersey residents can now register to vote online.The state elections agency launched its first ever online registration tool on Friday, though the governor announced it on Tuesday.So far about 13,000 people have successfully registered online.MORE: Full Election 2020 CoverageNew Jersey will hold its first ever general election mostly by mail this year because of the governor's response to the COVID-19 outbreak.AdvertisementRELATED COVERAGE: How to vote by mail in New JerseyElection officials, experts and USPS urging voters not to wait until state deadlines to mail in ballotsNew Jersey to mail all voters ballots for Nov.