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: Paris (CNN) -- France votes Sunday in a presidential runoff pitting incumbent Nicolas Sarkozy against Francois Hollande in an election dominated by economy, unemployment and immigration concerns. Campaigning concluded at midnight Friday. In the first round of voting, nearly a fifth of voters backed far-right National Front leader Marine Le Pen -- who wants to limit the number of immigrants entering France -- leading both candidates to reach out to her supporters. In his final address Friday in Paris, Sarkozy, of the center-right UMP party, picked up on the debate over immigration as he appealed for the support of the whole nation.President Nicolas Sarkozy and challenger Francois Hollande compete in a runoffThe pair wrapped up their election campaigns FridaySarkozy: "I am president of France. I must speak to the French, no matter who they are"Hollande: "We have the responsibility to unite, to reconcile" 
 Question:_, who said she would cast a blank vote on Sunday, declined to endorse either candidate.

Marine Le Pen