First major test of mail-in voting is complete
                                
                                
                                    (Newser) -
                                    Joe Biden easily trumped Bernie Sanders in Tuesday's presidential primary in Ohio, conducted almost entirely by mail, reports the  Hill . The former vice president nabbed 72.4% of 860,347 votes cast, according to  unofficial results , compared to 16.6% support for Sanders, who ended his campaign three weeks...