Why are the Sweden Democrats making overtures to the Social Democrats?

The centre-left Social Democrats, and not the conservative Moderates, are the long-term 'natural partners' for the far-right Sweden Democrats, a senior member of the populist party's ruling committee has claimed. Why is the party making overtures to its historic arch enemy?

Why are the Sweden Democrats making overtures to the Social Democrats?
The centre-left Social Democrats, and not the conservative Moderates, are the long-term 'natural partners' for the far-right Sweden Democrats, a senior member of the populist party's ruling committee has claimed. Why is the party making overtures to its historic arch enemy?