WATCH LIVE: Donald Trump holds rally in Montana in bid to oust Democrat Tester
Donald Trump speaking with supporters at a campaign rally at Fountain Park in Fountain Hills, Arizona (Gage Skidmore/Flickr)

Air Force One returned to Montana on Saturday for President Donald Trump's fourth campaign visit to Big Sky Country.

No other president in American history has visited Montana so many times in office.

Trump was making the trip in an effort to defeat Sen. Jon Tester (D-MT).

During his last Montana visit, Trump praised Rep. Greg Gianforte (R-MT) for assaulting a reporter.

Both Montana's U.S. Senate seat and long congressional seat are considered neck-and-neck races as the midterms approach.

The rally is scheduled to begin at 2:30 Eastern, 12:30 local time.