One possible route would be to seek the formal or informal support of the Green Party, traditionally part of the centre-left grouping.

其中的一个可行办法是寻求绿党的正式或非正式的支持。按照传统划分，绿党属于中间偏左的组织。

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Over the weekend, the right-leaning Christian Democratic Party (CDU) of German Chancellor Angela Merkel suffered an embarrassing, yet predictable, defeat by the left-leaning Green party in a key region of Germany.

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This left Green voters in ballot limbo, aligned with a non-existent party and thus ineligible to vote in primaries.

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The Green Party - which is a member of the left-wing government - is opposed in principle to a third airport, arguing that it should be sited in the provinces to encourage decentralisation.

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