I don't know why I thought it would be any different. But according to ballotpedia.org, the total turnout for Democrats in the June 7, 2016, primary was 214,512 compared with 95,452 for Republicans.
Of course, Bernie Sanders has really fired up some Democrats, and he made a good show of it with his enthusiastic supporters, but it wasn't enough -- he got 48.5% and 14 delegates. Clinton supporters can't be very exited, but her voters probably felt some sort of obligation to counter Sanders' supporters. Oh, the burden those people must feel as they haul Hillary's baggage around on their shoulders. Yet they pulled it off.
Meanwhile, it was dullsville in the Republican Primary. With all the former contenders now watching Donald Trump from the sidelines, there wasn't much point in voting. But many did, nonetheless.