In the last three months – since February 20th – there have been eleven democratic primary contests (two more, Oregon and Kentucky, take place today).
In these eleven contests, Obama has obtained a total of 394 pledged delegates, while Clinton has taken 398.
So in the last three months Obama has gathered fewer pledged delegates than Hillary Clinton.
In the same last eleven contests Obama has received 5,515,438 votes; while Clinton has received 5,858,938.
So in the last three months Clinton has received 345,500 votes more than Obama.