The Boston Globe about Wall Street's secretly purchased influence in Washington, D.C. was somewhat mistitled as being about the "struggle for the Democratic Party's Soul." It's also about how Wall Street's virtually unlimited cash secretly influences the key debates as well as the policy outcomes in the nation's capital.
Many Democratic women believe Clinton deserves the 2016 nomination because she was a graceful loser in 2008 and a good soldier thereafter. Nonetheless, having Clinton and Warren debate Democratic principles would be good for the party. However, the most serious problem with a Clinton-Warren battle is not gender or ideology. It's money. Many Democrats believe that having Clinton as their presidential candidate would ensure that Dems would receive millions in Wall Street donations, and enough campaign funds in general, to triumph over any likely Republican candidate.