You won't hear much about this on the GOS, but Republican voters are turning out in record numbers.

Republican turnout this primary season is up 64% over 2012, newly compiled data show, with participation accelerating in the most recent contests as voters in big states took the rare opportunity to play a meaningful role.

OK, so you probably already heard something about this. But what you probably hadn't heard is how the trend is accelerating.

The analysis found that turnout more than tripled in Connecticut, more than quadrupled in Rhode Island and rose 97% in Pennsylvania, which voted this week.

The opposite is true for Democrats.

In a stark contrast to the GOP turnout, Democratic participation has declined 17% so far from the party’s last competitive primary, in 2008...
According to the Public Opinion Strategies tally, some 25.1 million Republicans have cast ballots this year, compared with 15.3 million in 2012. Some 3.5 million more Republicans than Democrats have voted. Democratic primaries have drawn 21.6 million voters, compared with 26.1 million in 2008.

Hillarybots will tell you that this has no bearing on November, and that may indeed be true.
But, and this is a big but, the only available, concrete, un-spun data is turnout. So to say that it means nothing is just speculation based on hopes. Nothing more.
If Hillarybots are right, it'll only because of coincidence.

There is an interesting breakdown of the voters.

The female Democratic voter pool has exceeded the male pool been 14 percentage points more female than male, while the Republican electorate has been 2 points more male than female. Some 57% of Democratic primary voters have been women and 43% men. In the GOP voter pool, 51% of voters have been men and 49% women. White voters have accounted for 90% of the Republican electorate and 62% of the Democratic electorate.
The share of voters with a four-year college degree is slightly higher in the GOP electorate than in the Democratic voter pool. But voters with post-graduate degrees make up a larger share of the Democratic electorate.

Democrats still can't come close to winning without white voters, but you would never know that on DKos.

While Republican turnout was accelerating last week, Democratic turnout crashed in places like Democratic-controlled New York...by design.

Polling places didn’t open on time, voting machines malfunctioned, and voters showed up to find their names weren’t on the rolls. Some voters had their party affiliations mysteriously switched from Democratic or Republican to independent or non-affiliated and couldn’t vote in the closed primaries. And 3 million New Yorkers, 27 percent of the electorate, didn’t get to vote because they weren’t registered with the Democratic or Republican parties, and the deadline to change party affiliation was an absurd 193 days before the April 19 primary, as I reported on Monday.
As a result, only 19.7 percent of eligible New Yorkers cast a ballot, the second-lowest voter turnout among primary states after Louisiana, according to elections expert Michael McDonald. There were over 900 calls from frustrated voters to the Election Protection Coalition, more than in any other primary state.

It's not a bug. It's a feature.

As for Democratic turnout, there is an interesting article in the most surprising of places - the pro-Hillary site FiveThirtyEight.

In the ongoing fight between Democrats and Republicans over election procedures like voter ID and early voting, the Democrats are supposedly the champions of higher turnout and reducing barriers to participation. But when it comes to scheduling off-cycle elections1 like those taking place today, the Democratic Party is the champion of voter suppression.

This may not surprise to many here on C99P, but I'm sure this would be a shocking claim on GOS.
We've been told over and over again on DKos that the biggest impediment to voter turnout is the GOP. When in fact the opposite is true.

Nowhere are the strategic motivations — and the hypocritical rhetoric — of both parties more apparent than in the timing of elections.

The election calendar in the United States is an insane mess. Exhibit A is New Jersey. New Jersey holds federal elections with the rest of the country on the first Tuesday after the first Monday in November of even-numbered years. But elections for state office in New Jersey are held in November of odd-numbered years. School district elections are held on the third Tuesday in April or else in November. And fire district commissioner elections are held on the third Saturday in February.
...
Voters of all political stripes prefer consolidated elections, and by wide margins. But that’s especially true for people who identify as Democrats, who prefer consolidated elections 73 percent to 27 percent.
The consolidation bills, which were generally sponsored by Republicans, typically failed because of Democratic opposition, according to Anzia. By her account, Democrats opposed the bills at the urging of Democratic-aligned interest groups, namely teachers unions and municipal employee organizations...
For all the bills that went to the floor, Anzia estimates that Republicans voted for consolidation 60 percent of the time and Democrats 40 percent.

Nothing suppresses voter turnout more than scheduling votes for when voters don't want to show up. Just look at off-year election turnout for proof.
Of course the undemocratic nature of Superdelegates shows just how hypocritical the Democratic party is when it comes to turnout. But that's another story.