Kenya's Supreme Court is to meet a day before Thursday's repeat presidential elections to decide whether the polls should go ahead if a credible vote can not be guaranteed.
The man was shot in the shoulder and his gun was taken as he was buying pots of flowers by the side of the road in the Dagoretti area of Nairobi, police said.
The bodyguard and driver of Kenya's deputy chief justice was shot and seriously injured on Tuesday - just two days before a divisive re-run of the country's presidential election.
The election is due to take place the following day, on Thursday.
That ruling was the first time a court in Africa had overturned a presidential election, and it drew global praise as an affirmation of judicial independence.
Opposition leader Raila Odinga, who withdrew his candidacy from the re-run, called on his supporters to protest what they perceive are ongoing problems with the election commission.
It is important for the court to prevent a possible constitutional crisis by "ensuring that the fresh presidential elections are conducted in strict conformity with the constitution and applicable laws of Kenya", the petition says.
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However, as the American Civil Liberties Union (ACLU) has pointed out, the contract infringes upon constitutional rights. To get hurricane aid in the city of Dickinson, one has to take a pledge not to boycott Israel.
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Bishop added that Australia is focused on stopping Pyongyang from continuing its missile and nuclear tests and bringing the pariah state back to the negotiating table.
IEBC commissioners, they argue, are serving partisan interests and Chairman Wafula Chebukati has publicly admitted that he can not guarantee credible election. She then fled to the United States, saying she feared for her safety.
After the August 8 election, Odinga contested the results, claiming that election officials rigged the vote in favor of Kenyatta.
A day before the previous vote, on 8 August, another member of the election board was found tortured and murdered.
"Proceeding under current conditions would deepen Kenya's ethnic cleavages and prolong a stalemate that has already claimed dozens of lives and come at a high economic cost", it said. "As to how this will be done, we are waiting for the big announcement by Baba (Odinga) tomorrow", said one demonstrator, market trader James Ouma.
After the 2007 election, which observers agreed was deeply flawed, politically-motivated tribal violence left 1,100 dead.
That's the case Raila Odinga's lawyers cite in connection with his decision to boycott the poll.