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) Libertarian presidential candidate Gary Johnson said Wednesday that his party and the Green Party do not cancel each other out. "We're drawing pretty much equally from both sides," he told CNN's Don Lemon on "CNN Tonight." "I see that going all the way to the election." On Wednesday, CNN hosted a town hall with Green Party presidential candidate Jill Stein and her running mate, Ajamu Baraka. Stein defended her third-party candidacy against the logic that a vote for her would be a waste and would ultimately help elect Donald Trump. Jill Stein: I will have trouble sleeping at night if either Trump or Clinton is electedGary Johnson says he's optimistic about participating in the debates in the fallLibertarian and Green Party draw "equally from both sides" 
 Question:The _ candidate boasted that he and his running mate former Governor of Massachusetts William Weld is the only third-party campaign that will be on the ballot in all 50 states.

Libertarian