The 'snap election' is not new and it can be stopped

"The opposition parties would not be prepared, especially because of the tremendous resources required," one caller argued.  A supporter of the ruling Botswana Democratic Party argued that the opposition parties should always be ready to rule and that it was not a good enough excuse to claim unpreparedness to take on the task for any reason.

The snap election, in and of itself, would not be a novelty in Botswana.  Seretse Khama called an early election in 1969, three years after 1966, mainly to pre-empt a campaign by Bathoen Gaseitsiwe who had retired from bogosi to join the Botswana National Front.
The novelty is in the current circumstances: