The electoral map is pretty great for Hillary, and pretty garbage for Trump (or any republican).
http://www.270towin.com/
WInner needs 270 electoral votes.
Hillary starts with 217 solidly blue states.
Trump starts with 191 solidly red States.
If Hillary wins PA + Ohio + Virigna + NH, and loses everywhere else, she wins with 272.
If Hillar wins PA + VA + Florida, and loses every where else, she wins with 279.
If Hillary wins OH + FLorida + Iowa, and loses everywhere else, she wins with 270.
If Hillary wins VA + NC + PA + Iowa and loses everywhere else, she wins with 271.
For the record, in 2012 Obama won every state I listed above, with 332 electoral votes.
The same since 2000 map shows that Democrats have won just PA of that list, every presidential election, which offers a starting point of 242 for Democrats.
Comparatively, Trump would have ti win FL, Ohio, PA and NC, on top of the baseline, to get to 273. He could swap NC for VA and get 271. He could drop both of those and pick up NV and CO for 273.
The point is, Hillary has a lot more avenues to win than trump, with much larger margins. Trump would have to win states that Republicans haven't won in since 2012, with very different demographics, not to mention a Republican Party that will not support him.