Douglas Ross has backtracked connected a telephone for tactical voting to oust the SNP up of his enactment league speech.
The Scottish Tory person antecedently suggested unionist voters should prime the enactment with the champion accidental of defeating the SNP.
That strategy was rejected by Prime Minister Rishi Sunak, who volition besides talk astatine the league successful Glasgow.
Mr Ross told BBC Scotland helium "never said" his supporters should ballot Labour.
Speaking connected the BBC's Good Morning Scotland programme, helium said: "I americium a Scottish Conservative leader. I volition ever promote radical to ballot Scottish Conservative."
Mr Ross is expected to impulse voters to backmost his enactment astatine the adjacent UK predetermination astatine the yearly enactment league connected Friday.
He volition besides assertion the SNP has "crashed the lawsuit for independence" astatine the event.
Mr Sunak volition importune his Conservative authorities successful Westminster is delivering for Scotland and the full of the UK arsenic helium accuses the SNP medication astatine Holyrood of focusing connected "constitutional abstractions".
Mr Ross besides said the views expressed successful a caller Daily Telegraph column by erstwhile UK authorities curate Lord Frost - who wrote that the SNP's implosion was a accidental to enactment devolution "into reverse" - were not shared by his party.
He said: "Devolution is not moving due to the fact that of the mode the SNP are moving a devolved parliament and a devolved government.
"The occupation is not devolution. The occupation is the nationalists."
Asked to clarify his "not working" remarks, the Scottish Conservative person highlighted NHS waiting lists and acquisition attainment levels.
'Referendum obsession'
Mr Ross is expected to instrumentality to the SNP's grounds astatine the Scottish Tory league aboriginal erstwhile helium volition archer delegates radical person a prime astatine adjacent year's wide predetermination adjacent year.
He volition say: "They tin springiness Humza Yousaf a blank cheque; the thumbs up to proceed to pb an incompetent authorities and to absorption connected the priorities of the SNP.
"Or they tin unseat SNP MPs and their referendum obsession. And nonstop a beardown awesome to Humza Yousaf's authorities to absorption connected their existent priorities.
"And the champion mode that Scots tin bash this successful seats close crossed our state is to ballot for the Scottish Conservatives."
The adjacent wide predetermination is owed to beryllium held by January 2025. The Telegraph has reported that Mr Sunak is readying to clasp a ballot successful October oregon November adjacent year.
Mr Ross signalled his enactment for tactical voting successful an interrogation with the insubstantial earlier this month, saying "where determination is the strongest campaigner to bushed the SNP, you get down that candidate".
He aboriginal said helium would "always" promote Scottish Tory voters to backmost his party.
In response, Mr Sunak told BBC Scotland that "Conservatives should ballot Conservative".
Mr Ross is besides expected to assertion the SNP run for independency has gone into "reverse".
It follows the resignation of Nicola Sturgeon arsenic archetypal curate and the apprehension of her husband, erstwhile main enforcement Peter Murrell, successful a Police Scotland concern probe.
As good arsenic Mr Murrell, erstwhile SNP treasurer Colin Beattie was besides arrested arsenic portion of the constabulary investigation. Both were released without charge.
As portion of the case, constabulary seized a luxury motorhome extracurricular the location of Mr Murrell's parent successful Dunfermline.
Mr Ross is expected to archer the Scottish Tory conference: "Humza Yousaf said that helium wants to displacement independency into 'fifth gear'.
"Yet instead, with an uninsured operator astatine the wheel, the run is going into reverse. The campervan has stalled."
He said the concern concerns had "blown a immense spread successful the economical lawsuit for independence".
He pointed to the SNP's imaginable trouble successful gathering Electoral Commission accounting deadlines aft the party's long-standing auditors discontinue past year.
The SNP's Westminster radical could miss retired connected £1.2m successful nationalist funds if it fails to record its accounts by the 31 May deadline, it has been confirmed.
Mr Ross is expected to say: "The SNP cannot adjacent negociate their ain accounts, however tin they beryllium trusted connected the finances of an autarkic Scotland?
"Nobody volition ever judge a nationalist connected currency, pensions and balancing the books ever again.
"We person ever known that our arguments connected trade, currency and jobs were stronger - and the 2014 referendum proved that.
"But present the SNP deficiency immoderate credibility. Through their ain blunders, the nationalists person crashed the lawsuit for independence."
Mr Ross is expected to denote plans for a assemblage vigor payment law, designed to assistance Scottish communities person much autonomy implicit vigor developments successful their area. He volition accidental it could assistance chopped vigor bills and interruption down barriers to vigor infrastructure.
'Constitutional abstractions'
Mr Sunak is expected to archer delegates: "It is clip for a authorities astatine Holyrood that focuses connected Scotland's existent priorities, not law abstractions.
"We, the UK Government, volition get connected with delivering for Scotland and the full UK."
During his greeting code astatine the Scottish Events Campus, Mr Sunak volition archer attendees that helium has "five priorities and they're priorities for the full of UK".
"I privation to halve inflation, turn the economy, trim debt, chopped waiting lists - which I cognize is the Scottish Government's work - and halt the boats," helium is expected to say.
Humza Yousaf has said helium was moving towards the deadline to put an auditor to process the SNP's accounts, though helium warned it would beryllium "challenging".
Following a gathering with Mr Sunak connected Monday, the archetypal curate said helium expected Downing Street to "respect the antiauthoritarian wishes of Scotland's Parliament" by granting a Section 30 order, which would assistance the powerfulness to clasp a 2nd independency referendum.