Democratic Congressman Jared Golden and his Republican challenger, Austin Theriault, will square off in their first debate Thursday night.

The U.S. Chamber of Commerce is endorsing incumbent Democratic U.S. Representative Jared Golden in the Maine 2nd Congressional District race. Golden is facing Republican Austin Theriault in next months election and the U.S. Chamber is historically viewed as friendlier to the GOP.

The two Congressional candidates from Maine’s Second District will step onto the debate stage Thursday night.The race in Maine’s Second District is one of the more hotly contested races this cycle. It’s expected to be close and could ultimately tip the balance of power in the U.

Republican Austin Theriault has a narrow lead on Democratic U.S. Rep. Jared Golden, according to the first public poll of their race in Maine’s swing 2nd District.