Clinton began Election Day with a near guarantee of more than 250 electoral votes. The winner of the Electoral College needs 270 electoral votes. Clinton's strength lies in only needing wins in a few major states.
With a victory in Florida or Ohio, along with expected wins in Pennsylvania and Virginia, Clinton would have 270 electoral votes. Likewise, a victory in North Carolina and any other swing state would guarantee her victory.
If Clinton wins Pennsylvania and Michigan, a longtime Democratic stronghold, then victory in Nevada would also put her in the White House.
The takeaway: Clinton has far more paths to the White House than Trump. She only needs one, perhaps two, key wins to block Trump's path to the presidency.