A first-term Liberal MP is set to be tasked with fixing her party's damaged brand, but one analyst doubts the move will make any difference.

Kellie Sloane will nominate to become Liberal leader after Mark Speakman succumbed to pressure to resign, and on Thursday evening she was the only confirmed candidate.

There was speculation former minister Alister Henskens could nominate, but News Corp reported that he had decided against throwing his hat in the ring.

The position will be determined in a partyroom meeting on Friday.

Accepting his fate, Mr Speakman acknowledged the "statistical unlikelihood" of his first-term opposition rolling the Labor government at the 2027 state election.

No first-term opposition has won an election in NSW or federally since the 1930s.

The coalition has slump

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