Papua New Guinea's Institute of National Affairs says it makes sense that the leaders of two political parties, recently sacked from key roles, still appear committed to the ruling coalition.
The Prime Minister, Peter O'Neill, this week sacked Treasurer, Don Polye, who is from the Triumph, Heritage and Empowerment party, which is the second biggest party in the coalition.
Last month he sacked the leader of the United Resources Party, William Duma, as his Minister for Petroleum and Energy.
Paul Barker of PNG's Institute of National Affairs says the two parties would have made it clear they didn't want to move to the opposition.
"So, if you want to be in government as a party (and most people do want to be in government) and if you want to not be deprived of the party benefits then it's better to stay on the government side."
Paul Barker says Mr O'Neill could have been motivated to sack the two leaders because they had apirations of becoming Prime Minister.
