A week before state elections in Brandenburg, the state which surrounds the capital Berlin, the far-right Alternative for Germany (AfD) remains the favourite. Just weeks ago the AfD won a third of the votes in elections in the eastern German states of Saxony and Thuringia. Sunday’s election may be an historic moment: in Brandenburg the ruling Social Democratic Party (SPD) might be ousted from power for the first time since German reunification in 1990. It means that the might face defeat. A Forschungsgruppe Wahlen poll suggests the SPD has 26% of the vote, while the AfD is ahead with 29%. The …