The campaign is backed by 11 trade unions, including the Public and Commercial Services union (PCS) – which represents more than 80% of Border Force staff – refugee rights organisations and faith groups.
Sturgeon said that whoever gets the job “the change of Tory leader seems virtually certain to be accompanied by a shift even further to the right”.
Downing Street confirmed the Home Office agreement with the east African nation remained.
The Government in April signed a £120 million economic and migration agreement to send failed asylum seekers to Rwanda, though none have yet departed.
The Prime Minister is planning to avoid visiting the accommodation in Kigali where migrants who arrive by unauthorised means would be deported to.
“I haven’t myself seen any evidence of changes of behaviour in that particularity since the Prime Minister’s announcement on April 15.”
"He paid an innkeeper, we paid the Rwandan authorities. Exactly the same", he said.
"Have you actually read the Bible? Jesus, an anti-racist activist shaman, who you would call 'woke', said some very important things that are incompatible with the Tory Party and its racist, money obsessed hard-right narratives."
"Show us on the map where the Rwandan navy ties up its fleet of battleships Ben..."