Fox News wasted no time finding a replacement for Megyn Kelly, with Tucker Carlson now set to take over her 9pm time slot.

The news marks a fast rise for Carlson at the cable network, where he began hosting his 7pm program Tucker Carlson Tonight just this past November.

Carlson got that spot as a replacement host as well, taking over the time slot vacated by Greta Van Susteren when she made the decision to step down as host of her long-running program, On the Record with Greta Van Susteren.

Van Susteren also has a new show, For the Record, which will premiere at 6pm this Monday on MSNBC.

Carlson has been with Fox News for years, but prior to taking over for Van Susteren had a smaller role on the channel as one of the three hosts on the weekend edition of Fox & Friends. He started out as a contributor on the network back in 2009.

Soon after the announcement that Carlson would be hired to replace Kelly, New York reported that Rupert Murdoch himself made the call in a move to fill the open time slot with a more pro-Trump anchor.

A longtime confidante of Murdoch also said that Murdoch and Trump now speak on the phone with one another three times a week.

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Switch-up: Tucker Carlson (left) will host the 9pm hour on Fox News, taking over for Megyn Kelly (right)

Fan: Kelly applauded the decision made by Fox News to put Carlson in her time slot (above)

Moving to primetime: Martha MacCallum (above in January with Bill Hemmer) will replace Carlson at 7pm with a new show, The First 100 Days

Support: Kelly also voiced her support for giving MacCallum her own show on the network (above)

Drudge Report was the first to report that Carlson, 47, would be replacing Kelly.

Martha MacCallum will replace Carlson at 7pm with a new show, The First 100 days.

That program will premiere January 16 examine Donald Trump and his administration during their first 100 days in office.

MacCallum will not be hosting America’s Newsroom while appearing on her new show, with Fox News' Supreme Court reporter Shannon Bream filling in for her opposite Bill Hemmer on the show.

Bret Baier will cover Carlson's 7pm time slot on the channel all next week with a special two-hour edition of his 6pm program Special Report.

Greta Van Susteren will host a new MSNBC show it was revealed on Tuesday as well (above in 2010 with Kim Kardashian)

Executive Chairman of 21st Century Fox and Executive Chairman of FOX News Rupert Murdoch said of Carlson: 'In less than two months, Tucker has taken cable news by storm with his spirited interviews and consistently strong performance.

'Viewers have overwhelmingly responded to the show and we look forward to him being a part of Fox News’ powerful primetime line-up.'

Murdoch also said on MacCallum after announcing the news of her new post: 'Martha is a versatile and skilled anchor who has proven to be an essential component of our news programming.

'For the last 12 years, our viewers have trusted her reporting and we are pleased she will be part of our primetime line-up for the first 100 days of the new presidency.'

MacCallum joined Fox News in 2004 and this past election co-moderated two Republican presidential primary debates alongside Hemmer.

She joined Hemmer on America's newsroom in 2010, when his co-host Kelly left to host her own afternoon program, America Live.

Bream meanwhile voiced her excitement about her new gig by tweeting on Thursday: 'STOP! HEMMER TIME! Cannot wait to spend the 1st 100 days of the new administration with my buddy @BillHemmer #wegotthis.'

Carlson started his television career at CNN when he was just 30, co-hosting The Spin Room, a show whose basis was the presence of a liberal (Bill Press) and a conservative (Carlson) debating the news and politics of the day.

He was eventually promoted to co-host of the network's biggest show at the time, Cross fire, but moved on in 2005 after five years.

CNN said at the time they did not renew Carlson's contract while he said he had decided months prior that he was not going to stay.

Carlson quickly found a new home at MSNBC, where in June of that same year he began hosting his own show, The Situation With Tucker Carlson.

The name of the show was later changed to Tucker, but ratings continued to drop over the course of three seasons and in 2008 his show was cancelled by the network.

Carlson, who worked for the national conservative journal Policy Review shortly after graduation from Trinity College, also launched the conservative news site The Daily Caller in 2010.

He is married to his high school sweetheart and the couple have four children - a son Buckley and daughters Hopie, Lillie and Dorothy.

Family: Carlson s married to his high school sweetheart and the couple have four children a son Buckley and daughters Hopie, Lillie (above with her father) and Dorothy

Have at it: Jon Stewart (left) famously called Carlson (right) a 'd***' during a 2004 appearance on Crossfire

Carlson quickly made a splash a little over a month into his new job at Fox News due to a heated exchange with a writer from Teen Vogue.

Carlson had Lauren Duca on the program to discuss the incident that happened just before Christmas when Ivanka Trump was accosted on the plane by a man who criticized her and her father while she was travelling with her young children.

Duca had tweeted prior to the segment: 'Ivanka Trump is poised to become the most powerful woman in the world. Don't let her off the hook because she looks like she smells good.'

That tweet threw Carlson off however, with it becoming clear that the host has taken it to mean that Duca supported the actions of the man on the plane.

When Duca agreed with Carlson that the man was in the wrong the two launched into a spirited debate during which Carlson frequently cut off his guest, who was not in the same studio as Carlson and thus at a disadvantage when it came to getting a word in.

She eventually called Carlson a 'partisan hack' while he closed out the segment by saying Duca should 'stick to the thigh-high boots' stories.

Video from the segment went viral with may outlets covering the exchange between the two. Some believed Carlson had come out on top and others Duca.

Carlson's most famous on-air debate however came back in 2004, when he and Jon Stewart went at it during an episode of Crossfire.

After being challenged by Stewart, Carlson asked why he was not being funny, and told the then-host of The Daily Show: 'You’re more fun on your show.'

An unamused Stewart fired back at Carlson, saying: 'You’re as big a d*** on your show as you are on any show.'

Crossfire was cancelled three months later.

New co-host alert: Fox News' Supreme Court reporter Shannon Bream (left) will in in for MacCallum opposite Bill Hemmer (right) on America's Newsroom

Punny: Bream voiced her excitement about her new gig by tweeting on Thursday: 'STOP! HEMMER TIME!

The news on Tuesday that Kelly would be leaving Fox News put to bed months of speculation regarding what the star host planned to do when her contract was up with the cable news giant.

Kelly's last day at Fox News will be Friday, and she will make the move to NBC in July where she will host a weekday talk show and a Sunday news magazine while also anchoring special event coverage for the network.

Murdoch released a statement with some kind words for Kelly after learning the news on Tuesday, saying: 'We hope she enjoys tremendous success in her career and wish her and her family all the best.'

Kelly also released a rare public statement on Tuesday after news of the NBC deal broke in which she spoke about her new position and gave thanks to everyone at Fox News.

'While I will greatly miss my colleagues at Fox, I am delighted to be joining the NBC News family and taking on a new challenge,' wrote Kelly on Facebook.

'I remain deeply grateful to Fox News, to Rupert, Lachlan and James Murdoch, and especially to all of the FNC viewers, who have taught me so much about what really matters.'

Kelly was reportedly offered a four-year contract valued at $100million to stay at Fox News but turned it down to move to NBC.

She was quick to congratulate her two Fox news co-workers on Thursday, writing: 'Congratulations to my friend @TuckerCarlson on moving to the 9p slot at Fox! This is a great decision by FNC & I will be cheering him on!'

She followed that up with: 'And congrats to the always classy @marthamaccallum on moving to the 7p! She's amazing & will shine at any hour.'