DETROIT – Donald Trump receive 0 percent support in the city of Detroit during a recent WDIV/Detroit News poll.

The poll, run from Sept. 27-29, found 39 percent of voters across Michigan supported Trump, placing him roughly 7 points behind Hillary Clinton.

RELATED: Clinton leads Trump by 7 points in Michigan, post-debate poll finds

Poll data shows Clinton holds a significant advantage over Trump among African-American voters, and among Detroit voters. Trump leads Clinton in Macomb County and in northern Michigan, including the UP.

Trump's 0 percent support in Detroit isn't unprecedented. The Republican candidate polled 0 percent among African-American voters in Pennsylvania and Ohio over the summer, according to an NBC poll.

In the Detroit poll, there are important caveats to the data. While the poll surveyed 600 likely voters across Michigan -- a large enough sample size to get meaningful data -- just 39 people were surveyed in the city of Detroit. The smaller sample size in the city increases the margin of error, and there's almost certainly people living in Detroit who will vote for Trump in November. The survey found 7.7 percent of voters were "undecided"

The current data, however, suggests Clinton has an overwhelming advantage in the city. She polled at 89.7 percent support in Detroit.

Along with undecideds, Libertarian candidate Gary Johnson's 2.6 percent support made up the rest of the support in the city. Like Trump, Green Party candidate Jill Stein received 0 percent support in Detroit.

Here's a breakdown of support by candidate by region across Michigan. Sample sizes are small at the local levels, so the margin of error per region is high.

About the poll

The Glengariff Group, Inc. conducted a 600-sample, live operator telephone survey of likely November 2016 Michigan general election voters. The survey was conducted from September 27-28, 2016 and has margin of error of +/-4.0 percent with a 95 percent level of confidence. 65% of respondents were interviewed by landline telephone. 35 percent of respondents were interviewed by cell phone telephone. This survey was commissioned by the Detroit News and WDIV Local 4.

See a full breakdown of poll results here.