Republican presidential candidates will go head-to-head in Detroit Thursday night, offering their final pitches to the people of Michigan ahead of next week's primary.
Before the Iowa caucuses, Trump skipped a next Fox-hosted debate and held an event to benefit veterans groups instead, after a back-and-forth battle of statements and attacks with Kelly.
The feud between Trump and Kelly started last August at the very first Republican presidential debate when the two had a contentious back-and-forth.
Here’s a look back:
In a question directed at Trump, Kelly listed derogatory remarks she said the GOP hopeful has made about women, from “fat pigs” to “dogs, slobs and disgusting animals.”
Trump fired back on Twitter following the debate.
Wow, @megynkelly really bombed tonight. People are going wild on twitter! Funny to watch.— Donald J. Trump (@realDonaldTrump) August 7, 2015
But it didn’t end there.
Trump continued to criticize the Fox News host, telling CNN that “There was blood coming out of her eyes, blood coming out of her wherever." In an interview with ABC's "This Week" in August, Trump reiterated that he meant Kelly's nose when he said "wherever."
Kelly said in an interview with Charlie Rose last October that neither she nor Fox News wanted “any sort of war” with Trump.
“He was obviously upset. That's fine; he's running for president, it's not a fun business, there's gonna be ups and downs and I know he considered that a down,” Kelly said. “So we just wanted to forge forward and try to put it behind us, not pour any more fuel on that fire."
While Kelly insisted she wouldn’t engage in a feud with Trump, she was quick to respond on social media after a series of attacks from the Republican front-runner.
Isn't it terrible that @megynkelly used a poll not used before (I.B.D.) when I was down, but refuses to use it now when I am up?— Donald J. Trump (@realDonaldTrump) November 4, 2015
At the beginning of February, Kelly called the feud she and her network have with Donald Trump “bizarre.”
"It was bizarre because I became the story. He was so very focused on me that I became the story and, you know, you never want to be the story when you're a news person,” Kelly told ABC’s George Stephanopoulos referencing the frayed relationship she has with the GOP presidential candidate. “You want to be covering the story so it was like an Alice-through-the-looking-glass experience.”