Donald Trump will face off against potential Democratic challenger Beto O’Rourke Monday in El Paso, Texas, as they headline competing rallies on the president’s proposed border wall with a second possible government shutdown less than a week away.

And based on preliminary numbers…Beto’s rally could be larger.

Trump has depicted El Paso as a case study for the power of a wall to stop undocumented immigration and violent crime. Many locals challenge his claims.

El Paso is O’Rourke’s hometown, and the former congressman plans to counter-program Trump with his own rally at the same time. Only a few hundred yards will separate the two men as they speak.

El Paso is “safe not because of walls, and not in spite of the fact that we are a city of immigrants,” O’Rourke wrote in a Medium post published Friday that also includes a 10-point plan on immigration policy. The city is “safe because we are a city of immigrants and because we treat each other with dignity and respect.”

President Trump has taken note of @BetoORourke's rally in El Paso tonight, too.

"We have a line that is very long already…I understand our competitor has a line, too. But it's a tiny little line but of course they'll make it sound like they had more people than we do."

— Meridith McGraw (@meridithmcgraw) February 11, 2019

Trump vowed that he would out-draw his adversary. Five hours in advance of the rally, he boasted to reporters at the White House that his event has “a line that is very long” and claimed O’Rourke’s event has “a tiny little line.” The president added that “they’ll make it sound like they had more people than we do — that’s not going to happen.”

The Monday rally is Trump’s first since the midterm elections, and comes as talks stalled between lawmakers on Capitol Hill working to cut a deal on border security and avert a second shutdown.

Trump is expecting 8,000 people at his rally, but O’Rourke could get 9,000.

This could be more than are at Trump's rally https://t.co/kJ4WA5k7Pc

— Emily C. Singer (@CahnEmily) February 11, 2019

What's 67,000 imaginary people amongst friends? https://t.co/XBgAunazdI

— Jennifer Mendelsohn ???????? (@CleverTitleTK) February 11, 2019