This comes ahead of a busy week in the Pittsburgh area: Vice President Mike Pence, Eric Trump, Joe Biden and President Trump will all be visiting.

MONONGAHELA, Pa. (KDKA) – This Labor Day, President Trump supporters and boaters are gathering on the Monongahela River for a rally.

NewsChopper 2 flew over the event, capturing people and boaters gathered on the Mon River Monday afternoon.

READ MORE: NFL Week 13 AFC East Preview: CBS Boston's Levan Reid Calls AFC East Title Fight A Battle Of 'Big Brother Vs Little Brother'

A flyer for the event promoted speakers, food trucks, “Trump swag,” the ability to register to vote and a chance to meet GOP candidates running for local office. A Facebook post for the river rally also says they’ll be collecting donations for area police and firefighters.

The event comes ahead of a busy week in the Pittsburgh area: Vice President Mike Pence and Eric Trump will each visit later this week, and both Biden and President Trump will commemorate the 19th anniversary of 9/11 in Shanksville, Somerset County.

READ MORE: Ringgold Teacher Accused Of Attacking Daughter At School

(Photo Credit: KDKA Photojournalist Ian Smith)

Last week, Biden spoke in Pittsburgh while the president visited Latrobe.

MORE NEWS: SportsLine Week 13 AFC West Picks: 'Denver Designed Well To Stop What Kansas City Does,' Says Larry Hartstein

Meanwhile, the race for the White House has tightened in Pennsylvania, with former Vice President Joe Biden holding a 4-point lead over President Donald Trump among registered voters, according to the latest Monmouth University Poll.