German Chancellor Angela Merkel is almost certain to be re-elected for an unprecedented third term as the federal elections are due to take place on Sunday.
Europe's most powerful woman is considered to be as popular as ever, but her centre-right majority is under threat from an anti-euro party and the Socialist Democratic Party of Germany.
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Police found one child chained to the ground, another tied to a door with a dog lead, while six others were also rescued.
Wintry scenes across the UK this late in April have not been seen since the mid-1980s.
The Labour leader will also announce an inquiry into anti-semitism and other forms of racism to be chaired by Shami Chakrabarti.