3. The economy is strong.

President Donald Trump. Adam Bettcher/Getty Images

The economy is strong, which bodes well for Trump, who can cite his signature tax cuts as a major reason why.

Read more: The GOP tax cuts could help Trump get reelected in 2020, even though most Americans hate them

"I think if you look at all the sentiment measures that matter, they're through the roof," Kevin Hassett, the chairman of the White House National Economic Council, told INSIDER. "If you look at the most recent retail sales data, people are feeling great and they're out there buying stuff. And in the end, if you're forecasting the economy, that's the sentiment that matters."

Whether the economy continues to grow is up in the air, as some speculate a recession could be on the horizon.