On October 8, North Dakota Public TV held a three-candidate debate for U.S. House. The debate included the Democratic nominee and the two independents. The Republican declined to participate. See this story.
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Backers of the Massachusetts top-two initiative have raised $4,141,351, according to this news story. Much of that money has not yet been spent.
Maine has held two gubernatorial debates this year, and both of them included all three candidates on the ballot. They are the Democratic and Republican nominees, and independent Rick Bennett.
Here is a news story about the second debate, held on October 8.
On October 6, the League of Women Voters of Idaho sponsored a gubernatorial debate. The only two participants were the Democratic nominee, and independent candidate John Stegner. Stegner is a former Idaho Supreme Court Justice. The Libertarian and Constitution Party nominees for Governor were not invited.
The only North Carolina U.S. Senate debate this year will be on October 15, between the Libertarian nominee and the Green nominee. See this press release. The Democratic and Republican nominees were invited but declined to attend, nor will they be engaging in any other debate.