Having been bemused by the "Hillary is IN for 2016!" messages that I've been receiving and not having received anything similar from the Sanders camp, I tried an experiment this morning by Googling "Hillary is in for 2016." Google gave me 10 results, of which 5 were from a site called biggsforkansas.com and one was my own blog post.
This seemed low, so I tried "Clinton is in for 2016," and also got only 10 results. Then I tried "Bernie is in for 2016," which produced only one result. However, "Sanders is in for 2016" produced what Google claimed to be 2,290 results, of which Google shared just 28 with me -- low, but still nearly 3 times as many as the similar search for Secretary Clinton.
I'm not sure what to make of this result -- treating a Google search as an opinion poll risks falling victim to the Literary Digest syndrome -- except to note that Senator Sanders must be running an efficient campaign if Google associates his lead opponent's tagline with the Sanders campaign more strongly than with the Clinton campaign.