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: Washington (CNN) -- House Democrats are bracing for a rough election night next Tuesday, and top leaders are making a major push for rank and file members to open their wallets to help save those vulnerable Democrats who are in danger of losing their seats. House Democratic Leader Nancy Pelosi and Rep Steve Israel, D-New York, chairman of the Democratic Congressional Campaign Committee, held a conference call Tuesday afternoon with House Democrats and told them it was time to pony up -- and gave them a Friday deadline. According to a source on the call, a dozen House members and two Democratic candidates pledged almost $500,000 during the session.Democratic leaders seek campaign donations from rank and file representativesAs midterm vote nears, Democrats want final push for incumbents in tight racesRepresentatives are asked to give their extra funds to help in those races 
 Question:But the ones who spent hours hosting fundraisers and trekking over to the _ headquarters to dial donors for dollars are frustrated with colleagues who don't reach their targets and don't seem to suffer major repercussions.

Democratic Congressional Campaign Committee