The report from 1988 says Jackson assaulted a man and pushed his partner during a fight.

Jackson was chosen by Maine Democrats to replace Graham Platner, who dropped out of the race.

Jackson is running against Republican Senator Susan Collins in a close election.

Maine Democrats chose Jackson as their new candidate.

Troy Jackson became the Maine Democratic Party's choice for Senate nominee.

A recent poll shows Jackson slightly ahead of Collins in the election.

The Republican National Committee called Jackson 'violent and unhinged'.

The National Republican Senatorial Committee asked if Democrats would drop Jackson.

A new poll shows the latest numbers in the Maine Senate race.

Graham Platner was the original Democratic candidate before he dropped out.

A police report from 1988 accused Jackson of assaulting another man.

The fight was over Jackson's partner, who is also his second cousin.

Jackson and his partner have two adult children together.

The police report said Jackson's partner told officers he pushed her.

Jackson went to a house in Fort Kent, Maine, around 2 a.m.

Jackson kicked in the door and grabbed a man by the throat.

Democrats are standing by Jackson despite the controversy.

Jackson spoke at an event with Graham Platner before.

Jackson said he took responsibility for the fight 40 years ago.

Jackson denied being violent with his partner or any other woman.

Jackson's partner said she doesn't remember making statements about the incident.

She said Jackson has been a caring partner and father over the years.

Check out the latest power rankings for the midterm elections.

Senator Susan Collins toured a food bank in Maine.

The Jackson campaign said he acknowledges getting into a physical fight.

A man claimed he witnessed Jackson strike his partner years ago.

Jackson used to be a conservative Republican before becoming a Democrat.

Jackson faced reports about his temper and workplace conduct.

Jackson said he's been vetted and tested over his 20 years in the legislature.

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Some Democrats are concerned about Jackson's nomination.

A Democratic strategist said the vetting process was rushed.

The NRSC asked if Democrats would call on Jackson to drop out.

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Jackson campaigned with Platner during the primary.

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Jackson is running on a platform for working-class voters.

Paul Steinhauser covers the national campaign trail for Fox News.