The 67-year-old incumbent will participate in the presidential election which is scheduled for October 11.
There has been speculation that Rahmon, who has been president since 1992, would bow out of the vote to clear the way for his son, Dushanbe Mayor Rustam Emomali, to run for president.
The ruling People’s Democratic Party, which was founded by Rahmon, will nominate its candidate on September 3.
Once his candidacy is formally registered, Rahmon will join five other candidates who entered in competition.
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