Race for US Congress remains under the radar

In recent weeks, he's soaked up national attention as a potential vice president or secretary of defense in a Trump administration.

Juneau, a Democrat, is the clear underdog in a race that has generated little attention thus far, partly because the race has been mostly overshadowed by the state's gubernatorial contest.

Juneau touts her accomplishments as schools chief, while Zinke, a former military officer, bills himself as an expert on national security.

According to the latest campaign finance reports filed with the Federal Election commission, Zinke had $1.2 million left in the bank as of June 30, even after burning through $2.6 million.

Juneau had $524,000 cash on hand as of May 18 and is counting on strong support from the Democratic Party and Emily's list, the political action committee that is working to advance women in politics.

"Even if Juneau does not raise as much as Zinke she will raise enough to be competitive in terms of being able to advertise and make her case to voters," said Jeremy Johnson, a political science professor at Carroll College.