With some battleground state polls tightening, both presidential candidates have frenetically campaigned around the country in the effort to lock down enough states to add up to the 270 electoral votes needed to win the presidency.
Overall, Hillary Clinton still appears to have a broader path to victory. NBC's battleground state map estimates that 182 electoral votes are a lock for Clinton, with an additional 92 leaning blue, for a projected total of 274.
NBC News estimates that 71 electoral votes are solidly in Donald Trump's column, with an additional 109 leaning his way, for a total of 180.
With states shifting as different political scenarios evolve, there are plenty of possibilities to mull. (For example, Trump could conceivably lose Utah to third-party candidate Evan McMullin. Reams of Virginia polling showing Clinton with an advantage there could be proven wrong. And so on.)
For the sake of this exercise, though, let's look at some of the most plausible ways each candidate could seal the deal.
More from NBC News: