NYT:

Liberal and Democratic-leaning groups, facing a difficult midterm election next year without the technological muscle of the Obama campaign behind them, are preparing a major effort to improve their data infrastructure.

George Soros, the retired hedge fund billionaire and longtime patron of liberal causes, will invest $2.5 million in the effort, officials involved with the plan said. His participation is a signal that some of the wealthy donors who arrived late to the Democrats’ “super PAC” efforts in 2012 are committing early for the next round.