He will set out plans to deliver a “decade of opportunity” and say that voters can choose a responsible plan to build a stronger economy and a fairer society.
“Our prospectus to the people of Scotland is proudly Liberal Democrat – standing on the record of progress in government and vision of the future,” he said ahead of the South Queensferry launch.
“In just five years we have got the economy back on track and done so fairly. We are now closer to our ambition of creating opportunity for everyone. But with wins for the Liberal Democrats in this election we can make it a decade of opportunity.
“We can create opportunity for children by investing in education, especially in the early years.”