The relevant questions were asked in round 10 of the European Social Surveys (ESS). If you click on the attached table, you can see how the answers to these questions turned out in context. The table shows the percentage of those who do not categorically rule out "if Germany had a strong leader who is above the law." The table shows in particular how this percentage changes with attitudes towards immigration and authority as an educational goal.
Firstly: the more critical the attitude towards the form of immigration in question, the greater the percentage of those who would not categorically rule out "a strong leader who is above the law." In the table, this percentage rises from 27 percent to 39 to 48 percent (column on the far right).
Secondly, the attitude towards the principle of authority also has an influence on the percentage of those who would not categorically exclude the leader in question. In this respect, the percentage rises from 18 to 32 to 50 percent (row "All").
And thirdly, it can be seen that the two attitudes examined have their effect quite independently of one another. This is made clear by the structure of the percentages inside the table when we compare them row by row or column by column.