They held a snap election.

他们临时举行了选举。

《牛津词典》

That initially prompted Mr Berlusconi to favour a snap election.

这是促使贝鲁斯科·尼恩进行临时选举最初动机。

youdao

Greece’s prime minister, Costas Karamanlis, called a snap election, possibly in early October.

希腊首相科斯塔斯•卡拉曼利斯（Costas Karamanlis）要求提前举行选举，时间（赠译）可能会选（赠译）在10月初。

youdao

So now it appears Koizumi will dissolve his government and seek a snap election.

FORBES: More Turmoil In Japan

The main opposition party is demanding Mr. Noda first dissolve parliament for a snap election.

WSJ: IMF Says Asia Has Room for Stimulus

On April 21, President Jacques Chirac called a snap election, ten months ahead of the regular schedule.

CNN: World - Election Watch