At this point, we know a lot about how Donald J. Trump campaigns. But we know much less about how he would govern.
Trump has shifted positions on a wide range of issues before, after, and during his campaign, making it difficult to know for certain where he would land if he captured the White House. His circle of advisers is also smaller and less cohesive than past Republican candidates: Numerous policy aides from prior GOP administrations have opposed his candidacy, along with every living Republican president and nominee, with the exception of Bob Dole. That makes it difficult to predict who he would appoint to carry out his plans.
There are some hints from his inner circle at top positions, though: According to senior campaign aides, his transition team is eyeing Rudy Giuliani as a possible attorney general and Newt Gingrich as secretary of state. RNC chairman Reince Priebus is also under consideration as Trump's chief of staff.
Should Trump follow through on his more sweeping campaign pledges, policy experts and political veterans see the potential for an explosive four years in office.
In a speech this month, Donald Trump outlined a plan for his first 100 days in office that included a range of policy issues and some more personal items. He renewed his pledge to build a border wall, to undo President Obama's executive orders on immigration and other policies, and potentially to withdraw from NAFTA. On foreign policy, he has advocated an "America First" approach that has alarmed overseas leaders by calling into question alliances like NATO unless countries pay more for protection.
While Hillary Clinton's agenda is likely to be stymied by divided government if she's elected, a Trump victory would mean he'd probably take office with a Republican House and Senate, improving his chances of enacting major legislation. In practice, though, it may be difficult to keep his party together after a divisive race in which many lawmakers called on him to drop out in October (some later re-endorsed him).
At the same time, his platform is less reliant on Congress than Clinton's would be: Many of his biggest promises on trade, immigration, national security, and foreign policy can be achieved through executive action.
"He's going to try to start with a bang by taking as much of Obama off the books with a stroke of his pen as he possibly can," Brookings Senior Fellow William Galston said. "Then it gets tougher."
Compared to Clinton, there's tremendous uncertainty about how he would approach the presidency. Would he follow his running mate Mike Pence's lead, govern within the GOP mainstream, and delegate tasks to more experienced political hands? Or would he feud with Republican leaders and go his own way? When he faces inevitable setbacks will he negotiate compromises, as he has often indicated? Or will he reflexively seek revenge against his perceived enemies, as he has done constantly throughout his campaign?