Ruth Davidson is expected to resign as leader of the Scottish Conservatives on Thursday, reports suggest.
The Sun claimed the decision has been driven by the pressures of motherhood and because of splits with Boris Johnson.
Speculation that Davidson – who was previously touted as a future UK Conservative leader – was to step down came after the PM moved to temporarily shut down Parliament for more than a month in the bitter battle over Brexit.
Davidson had clashed with the prime minister when she campaigned for Remain in the 2016 European referendum – going up against pro-Leave Johnson in a televised debate at Wembley.
After Theresa May quit as PM, the Scottish Tory leader backed other candidates than Johnson in the race to succeed her, favouring first Sajid Javid and then Jeremy Hunt.
The Scottish Conservative leader returned to frontline politics earlier this year after taking maternity leave.
She and partner Jen Wilson welcomed a son, Finn, in October 2018 after Davidson underwent IVF treatment.
A spokesman for the Scottish Conservatives: “Ruth will make her position clear in due course. There will be no further comment tonight.”