Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: (CNN) -- Thailand's constitutional court has declared the country's February 2 general election invalid as it breached a law requiring that the polling process be completed on the same day nationwide. The opposition's boycott of the vote and widespread anti-government protests meant that candidates were not fielded in 28 constituencies. It had been expected that voting would take place in those areas at a later date. However, the court's six to three majority verdict cannot be appealed, meaning a new general election must be held across the South East Asian country. Thai Prime Minister Yingluck Shinawatra called elections in December, in an attempt to end political unrest.Thailand's constitutional court has declared the country's February 2 election invalidAn opposition boycott and protests meant candidates were not fielded in all constituenciesThe court said voting must take place across the country on the same day to be lawfulIts decision is final and no appeal can be filed, meaning new elections must be held 
 Question:_'s base is in the less affluent but more populous regions north and east of the capital.

Yingluck Shinawatra