Could late primary states be in the driver's seat?

This just occurred to me as I thought about this already too long presidential race. The conventional wisdom to this point has been that a front loaded primary season will select a nominee very early. But what if it doesn't? The fields in both races look like they'll be huge. A lot of the candidates will be underfunded, but there just may be more incentive to try and hang around long enough to get to that giant clump of primaries. It is conceivable that 3 or 4 candidates in each party could come out of that front loaded part of the season with a chance to win the nomination still. That would really shine a bright spotlight on the remaining primaries. It would also make all the states that lept forward to have their voices heard look foolish. I wouldn't be surprised in the least if at least one of the nominations wasn't decided until very, very late in the process.