Definition: In this task, you need to generate an appropriate title for the given summary of some paragraph. The generated title must be short and should include the main topic of the given text. Your summary should be less than 20 words long.
Input: Britain's political parties are in a race against time to get candidates in place for the snap election. They had been working on the assumption that there would not be an election until May 2020, but now have just three weeks to put names forward.

General election 2017: Can parties select candidates in time?