Starbucks Corporation is trading up more than 3 percent Tuesday after MKM Partners raised its price target on the stock from $114 to $130. The coffee chain is in the midst of a push to unionize and employees at three Starbucks stores in upstate New York have mailed in voting ballots, which are expected to be tallied on Thursday. On Monday, Sen. Bernie Sanders of Vermont met with four Starbucks workers, who are members of the Starbucks Workers United committee, via video conference to show support for the effort. If successful, employees from the three Buffalo area stores will form Starbucks’ first U.S. labor union, with employees from other parts of the country beginning to organize similar efforts. Whichever way the vote goes, it’s unlikely to affect Starbucks’ stock, which has also remained largely unaffected by the general markets regardless of which way they move. After a months-long period of …