Arthur, 33, secured more than half of the nominations from the party’s 23 divisions while incumbent Datuk Elron Alfred Angin managed just seven.
Candidates have to obtain nominations from at least half of PBRS divisions to contest the deputy president’s post, a party official said.
Arthur, the PBRS Youth chief, was expected to be named to the post during the party polls to be held at the triennial delegates conference on Nov 1.
Kurup retained the president’s post uncontested after nominations closed on Oct 28.
Arthur, a lawyer by profession, was admitted into the Sabah Bar in May 2012.
Prime Minister Datuk Seri Najib Tun Razak was scheduled to open the PBRS delegates conference here on Nov 1.
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