Promising to “step up the pace” in wooing Unionist voters he added: “Voters in Scotland have a chance on December 12 to make Nicola Sturgeon listen.
“Make your voice heard, and vote Scottish Conservative.”
An Ipsos Mori survey for STV last week predicted the SNP would make major gains in the election, winning 48 out of 59 Scottish seats.
But Tory strategists believe they are in 11 seats and second in 20.
Meanwhile, Nato Secretary General Jens Stoltenberg underlined the importance of Britain’s nuclear deterrent amid SNP demands for it be axed.
The First Minister wants the submarine-launched missile system removed from the Clyde and to build a cross-party coalition to have it scrapped.
Mr Stoltenberg told BBC One’s The Andrew Marr Show: “Part of the UK contribution to Nato is, of course, the UK weapons which contribute to the overall nuclear deterrent of Nato, which is something that is important for Nato.”