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: Texas Governor Rick Perry's former chairman Sam Clovis has joined forces with Donald Trump as the race to become the Republican Party's presidential nominee got its first defection last night. Clovis, an influential Conservative activist, college professor and talk-show host is now a member of Trump's team. In a sign that the GOP front-runner is being taken seriously on the campaign trail, Clovis, has become national co-chair and senior policy adviser for the Property tycoon turned politician. Earlier this week, Clovis quit the Perry campaign, after hinting that it was facing a host of difficulties. The Trump campaign relished announcing the defection on Tuesday night,  as it is a huge blow to Governor Perry who has run into financial difficulty and has been forced to stop paying staff.Sam Clovis has joined forces with Donald Trump as he jumps shipClovis left the Rick Perry campaign, after hinting it was facing difficultiesPerry has run into financial difficulty and has stopped paying staffClovis said he was 'humbled and honored' to take on the role for TrumpTrump's campaign hopes to use Clovis 'expansive expertise in economics' 
 Question:In most polls, _ is far ahead of his rivals and his brash style appears to be a winner with supporters.

Donald Trump