Photo taken on Oct. 16, 2018 shows the newly appointed Interior Minister Christophe Castaner in Paris, France. French President Emmanuel Macron on Tuesday named Christophe Castaner, one of his main backers, to supervise interior affairs and replace Gerard Collomb, in his latest cabinet reshuffle. (Xinhua/Jack Chan)

PARIS, Oct. 16 (Xinhua) -- French President Emmanuel Macron on Tuesday named Christophe Castaner, one of his main backers, to supervise interior affairs and replace Gerard Collomb, in his latest cabinet reshuffle.

In a statement, the president's office, the Elysee, said "following the proposal of Prime Minister Edouard Philippe, the President of the Republic ... named Christophe Castaner as interior minister."

Castaner had been Macron's spokesperson during his campaign for the presidential election in 2017, before being appointed secretary of state for parliamentary relations.

In Macron's first cabinet after the election, the 52-year-old lawyer was named leader of the ruling camp "Republique En Marche" party. He also served a few months as the government's spokesman.

The nomination of Castaner, one of the president's earliest backers, came after Collomb announced last month that he would quit the government in mid 2019 to run for the Lyon municipal elections in 2020. He had served as Lyon's mayor from 2001 to 2017.

On Oct. 3, Macron accepted Collomb's resignation after initially refusing it and asked Prime Minister Philippe to handle the interior portfolio until a successor is announced.

In the latest cabinet reshuffle, the fourth since he took power in May 2017, Macron had brought in new names with different political views with which he hoped to regain his footing and inject fresh impetus into his ruling camp.

Among the newcomers, socialist Didier Guillaume was named agriculture minister, replacing Stephane Travert, and Marc Fesneau, president of the centrist MoDem group at the National Assembly, will take charge of parliamentary relations.

Meanwhile, Macron has kept the main figures of the ministerial team in place for 16 months with Jean-Yves Le Drian still overseeing the foreign affairs ministry and Bruno Le Maire remaining in charge of the economy ministry.

"The President of the Republic has reshuffled the government to form a renewed team with a second breath, but whose political mandate remains the same," said the Elysee.

"This team will act in the continuity of the policy led by the government and the calendar of reforms for the coming months," it added.

Dogged by opponents for having a vertical, monarchical way of governing and a reputation for arrogance, Macron suffered a further setback after a series of resignations that put his political craftiness into question.

Collomb was the third minister to step down in five weeks after the resignations of Ecology Minister Nicolas Hulot and Sports Minister Laura Flessel.

A BVA poll released in September showed 32 percent holding a favorable view of Macron, down by two percentage points for the third consecutive month.

The new cabinet will hold its first meeting on Wednesday morning, according to the Elysee.