The good news for Donald Trump in a new poll released Tuesday: He's leading Hillary Clinton in a general election, 46 percent to 43 percent.

The bad news: That poll, which was conducted by Mason-Dixon, only surveyed voters in Mississippi, one of the most Republican states in the country -- and his lead is within its four-point margin of error.

The last time a Democrat carried Mississippi in a presidential election was in 1976, when former Georgia Gov. Jimmy Carter beat President Gerald Ford. Ford, of course, had recently pardoned his disgraced predecessor, Richard Nixon, and was deeply unpopular, having just survived a challenge from Ronald Reagan at the last contested Republican convention.

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Despite crushing both John Kasich and Ted Cruz in Mississippi last month in a landslide to win the Republican primary there, the poll shows Trump's opponents both holding double digit leads over Clinton in a general election, which Mitt Romney won by 12 points in the last election.

The Democratic front-runner holds a 93-point-lead over Trump among African American voters. And Trump is the lone Republican to trail Clinton among women.

"Well, the good news for Trump is he can finally cite a poll that shows him beating Hillary Clinton, the problem being he's only up 3 points in what is possibly the reddest state in America," Tim Miller, an adviser to Our Principles PAC, an anti-Trump super PAC.

"This is just more data showing Trump would be a disaster as a nominee and he would suffer a historic beat down at the hands of Hillary or Bernie."

The Trump campaign did not immediately return a request for comment.