Ms Harvey said the type of polling conducted was “pretty normal” for three months out from an election.
She said she would not talk about hypotheticals when asked ahead of the meeting if she would step down if the polling backed a change of leader.
“I’ll be leading the Liberal Party to the next election,” Ms Harvey said.
Opposition small business spokeswoman Alyssa Hayden said Ms Harvey should remain leader “at the moment” but left the door open to a change if polling suggested the Liberals should make a switch at the top.
“We’d have to see that polling, if that polling is there then that is something we need to discuss,” she said.
Liberal powerbroker Nick Goiran backed in Ms Harvey to retain the leadership and said there was no story when it came to the possibility of a spill.
“She continues to enjoy my 100 per cent support,” he said.
Mr Kirkup said he did not think it was strange the campaign arm of the party had been polling voters about the Liberal leadership.
“It’s not something that the parliamentary party gets involved in,” he said.
“From my perspective I think what’s most important is we continue to hold this government to account.”
Mr Kirkup said any suggestion of canvassing between MPs was untrue.
“I’m expecting it to be a fairly straight forward party room,” he said.
Leadership speculation sparked up last month after polling of five seats, published in The West Australian, suggested there could be a 16 per cent swing to the government.
Turfing out Ms Harvey would disrupt the Liberal party’s preparations for the coming election as the Opposition Leader starts to roll out more policies.
Ms Harvey revealed on the weekend a plan to introduce the option of expanded Sunday trading hours so metropolitan businesses could open from 8am instead of 11am.
Christmas trading hours would also be extended from 36 hours to 50.
Peter de Kruijff is a journalist with WAtoday.