Resolves based on whether or not their public facing first name, or preferred nickname, is also one of their birth names. Last names not considered.

They must be sworn in as president, and "confirmed" or whatever. Doesn't matter if they get there by election or military coup.

Examples of future presidents who would resolve this market YES:

Examples of future presidents who would resolve this market NO:

Nimrata Nikki Randhawa Haley ("Nikki" appears to be one of her birth names)

If someone is assigned a nickname and rejects it, it doesn't count. It needs to be a name they are called more often than their born first name, 

Please comment if you would like a ruling on anyone in particular.

 Joseph "Joe" Biden is the current president. His re-election in 2024 would delay resolution of this market, but it would not resolve. This market is based on whoever is sworn in as the "next" president, President 47. 

Fun fact: The only president to be "2 presidents" is Grover Cleveland. He was the 22nd President 1885-1889, lost re-election, and then was re-elected after a 4 year break from 1893-1897 as the 24th President. 

Because of this, Donald J Trump or other past presidents could still be the "next" President, while Biden (current president) would not be the "next" president, just serving a second term. 