When two companies come together, isn’t the first thing you think about what will happen to the companies’ PACs?  Merck & Co., Inc. and Schering-Plough Corp. recently annonuncedthat Merck will acquire Schering-Plough in a $41 billion deal.  Both companies have PACs registered with the Federal Election Commission (Merck PAC and Schering-Plough Corporation Better Government Fund).  Affiliated PACs share contribution limits.  Will one PAC be terminated?  Schering-Plough’s PAC has about $110,000 cash on hand as of its latest report; Merck PAC has about $365,000.