WiseGuys has the Joe Biden: American Promise Tour presale code: For a very limited time you can acquire your tickets before the general public! 
If you don’t buy your tickets to Joe Biden: American Promise Tour’s show in Washington during this pre-sale you might not be able to buy them before they become sold out!
Joe Biden: American Promise Tour show info:
Joe Biden: American Promise Tour
Warner Theatre
Washington, DC
Fri, Nov 17, 2017 08:00 PM
Onsale to General Public
Start: Fri, 07/28/17 10:00 AM EDT
End: Fri, 11/17/17 08:00 PM EST
Live Nation Mobile App Pre-sale
Start: Tue, 07/18/17 10:00 AM EDT
End: Thu, 07/27/17 10:00 PM EDT
Artist Presale
Start: Tue, 07/18/17 10:00 AM EDT
End: Thu, 07/27/17 10:00 PM EDT
Citi® Cardmember Presale
Start: Tue, 07/18/17 10:00 AM EDT
End: Thu, 07/27/17 10:00 PM EDT
Citi® Preferred Cardmember Presale
Start: Fri, 07/28/17 10:00 AM EDT
End: Fri, 11/03/17 10:00 PM EDT
Live Nation Presale
Start: Tue, 07/18/17 10:00 AM EDT
End: Thu, 07/27/17 10:00 PM EDT
You can use the following pre-sale codes and information to buy tickets:
Presale password for Joe Biden: American Promise Tour in Washington, DC Nov 17, 2017 - click for more info