2016 wont be a landslide.
It is a difficult election for Dems given it is a 3rd term.
I am confident Hilary can overcome that, though, the election will be close.
A realigning election results, at least at some point, of the dominant party winning a third consecutive election cycle. The Democratic-Republican (1800 to 1824), Democratic (1828 to 1856), Republican (1860 to 1892), Republican (1896 to 1928), Democratic (1932 to 1964), and Republican (1968 to 2004) parties were not prevented from the opposition parties in having the experience of winning a third consecutive election cycle.
Perhaps you aren't aware that 2008 was a realigning election for the Democrats.