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) Senate Democrats are vowing to stall action on eight of Donald Trump's Cabinet nominees tasked with carrying out his economic, law enforcement and regulatory agenda, a senior Democratic aide told CNN Monday. If carried through, the threat that could delay confirming the President-elect's choices for months. Those targeted include secretary of state nominee Rex Tillerson, attorney general pick Jeff Sessions and health and human services secretary hopeful Tom Price. Democrats warn if they don't get the nominees' required background information and financial records and have adequate time to review them before confirmation hearings are held, they'll drag out confirmation votes with a series of procedural maneuvers.Republicans are already planning confirmation hearings from Donald Trump's CabinetDemocrats can take procedural steps to slow the process down to a crawl 
 Question:"When President Obama was elected, Republicans and _ worked together and expeditiously to carefully consider his nominees.

Democrats