Reports from Solomon Islands indicate there is no clear front runner among the six MPs contesting the prime ministership this Wednesday.
Danny Philip resigned from the post last Friday, saying he felt the country was against him.
The candidates include three of Danny Philip's former ministers, John Moffat Fugui, Samuel Manetoali, and Gordon Darcy Lilo, who held the finance portfolio until he was sacked last week.
The opposition's Milner Tozaka and Douglas Ete are nominated, as is a former prime minister, Manasseh Sogavare.
Our correspondent, Koroi Hawkins, says there's little strength in party politics, so the vote will be determined by personal loyalties and groupings.
"Now the power ones, the ones with I would say a little bit more influence, and this would be Gordon Darcy Lilo, Manasseh Sogavare, and it's either between Milner Tozaka and Douglas Ete. Now the danger for the bigger candidates though, is if their votes are spread thin, then some of the lesser candidates might actually pull through."