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: Former Republican congressman and MSNBC TV host Joe Scarborough on Monday ripped the major TV networks for their selection of debate moderators, accusing them of deliberately sending Democrats to referee Republican debates. The channel's popular personality continued the still-simmering criticism of last week's Republican debate on CNBC, which was widely criticized for the performance of the moderators and has led to a revolt among the 2016 GOP presidential candidates. 'It is insane,' Scarborough said on his show, 'Morning Joe.' 'I will say as a Republican watching these debates for years, it is insane that you watch all of these debates and you see Republican primaries moderated by people that you know have never voted in a Republican primary their entire  life and have never voted for a Republican president their entire life.Former Republican congressman Joe Scarborough says Republican debate moderators are '90 percent' DemocratsScarborough has been a prominent voice criticizing his network's sister channel, CNBC, for last week's GOP debateHost seems to advocate candidate Ted Cruz's call for requiring Republican debate moderators to be Republican voters 
 Question:A much smaller group of three _ includes a former secretary of state, a former governor and a current senator.

Democrats