Though the left used data successfully in the 2012 elections, just wait for 2016.
One of the leading narratives of the 2012 campaign is that data trumped all. Nate Silver! The polling was dead on! The blowhard pundits were wrong! The Obama campaign's Internet money machine got people to give lots of money over the summer with George Clooney-dinner enticements tailor made for West Coast females aged 40 to 49!