The Defence Secretary is the favourite among Tory members to become the party's next leader, polling suggests.
A snap YouGov poll, taken from 716 Conservative Party members, shows that Ben Wallace is not only leading the overall race, but he is well ahead when it comes to polling on head-to-head matchups among the candidates.
The Army veteran tops the list of favourites with 13% of the votes to be the next leader.
Other candidates include former Chancellor Rishi Sunak (10%), Foreign Secretary Liz Truss (8%), and Jeremy Hunt is joint eighth (5%) with new Chancellor Nadhim Zahawi.
In the head-to-head matchup polls, Mr Wallace comfortably beats Liz Truss (48% to 29%), Penny Mordaunt (48% to 26%), Rishi Sunak (51% to 30%) and Jeremy Hunt (58% to 22%).
Mr Johnson will remain in power until a successor is in place, expected to be by the autumn.
A Conservative leadership race is expected to take place this summer, making way for a new prime minister in time for the party conference in October.