More than 40,000 people are expected to attend Vice President Kamala Harris' final speech at the Ellipse Temple on Tuesday evening. Lines are already forming along Constitution Avenue ahead of the speech, which is scheduled to begin at 7:15 p.m. At least one person has to use the toilet, right?

When the sound of the Blue Wave becomes too much for your bladder to bear, Washingtonian This guide to nearby public toilets has you covered.

On the National Mall

While the mall's restroom situation is notoriously inadequate, there are portable restrooms across Constitution Avenue across from the Ellipse and eight functioning public restrooms in the mall—if you're able to walk some of the way—as well as a handful Restrooms inside the Smithsonian Museums, which do not require tickets, and the White House Visitor Center. Keep in mind that these establishments will be closed before Harris takes the stage.

Public toilets (open 24 hours):

• 15th St., NW (at the Washington Monument, 2 15th St., NW)
• 1515 Independence Ave., SW (near the Sylvan Theater)
• 15 Home Front Drive (in Ash Woods Park, by the World War II Memorial)
• Independence Ave., SW (at the DC War Memorial, 900 Ohio Drive, SW)
• Constitution Gardens Path (about halfway between the Vietnam War Memorial and Carp Pond)
• 100 Daniel French Drive, SW (near the Lincoln and Korean War Memorials)
• 121 W. Basin Drive, SW (at the MLK Memorial)
• 400 W. Basin Drive, SW (at the FDR Memorial)

Smithsonian Museums (closed at 5:30 p.m.):

• National Museum of American History (1300 Constitution Ave., NW)
• National Museum of Natural History (10th St. & Constitution Ave., NW)
• National Museum of Asian Art (1050 Independence Ave., SW)
• Hirshhorn Museum (Independence Ave., SW & 7th St., SW)

White House Visitors Center (closes at 4:00 p.m.):

• 1450 Pennsylvania Ave., NW

Subway stations nearby

Yes, these subway stations have restrooms – and in case an emergency occurs, they are within walking distance of the Ellipse:

• Federal triangle
• Smithsonian
• McPherson Square
• Farragut West

Here's an interactive map for all your bathroom needs: