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: Republican presidential hopeful Jeb Bush already has so much capaign cash in a super PAC that supports him has reportedly asked his biggest donors to limit themselves to giving $1 million each. At least during the current fundraising quarter that ends March 31. Insiders told The Washington Post that Bush is telling his super-wealthy supporters to put a cap for the moment on the high-dollar checks they write to his Right to Rise super PAC. Super PACs can collect unlimited money from individuals and corporations, and spend it to support candidates, as long as there's no 'coordination' with their campaigns when the spending happens.The Washington Post reports insiders say Bush doesn't want to give Americans the impression that he'll be beholden to the super-richHe hasn't yet announced his candidacy but launched a super PAC that will support him if and when he runs for presidentSuper PACs can collect unlimited money and spend it to support candidates as long as there's no 'coordination' with their campaigns 
 Question:Almost no one else in the potential _ field is thought to have the capacity to match his fundraising juggernaut.

Republican