Shares of health insurers surged in morning trading Wednesday, as the New Hampshire primary victory by Bernie Sanders, who proposes Medicare for All, was seen as bolstering the chances that Donald Trump will win re-election. UnitedHealth Group Inc.'s stock /zigman2/quotes/210453738/composite UNH -5.07% shot up $12.13, or 4.2%, to pace the Dow Jones Industrial Average's /zigman2/quotes/210598065/realtime DJIA -4.06% gainers, putting it on track for a record close. The price gain was adding about 82 points to the Dow, which was up 191 points. Among other insurers, shares of Cigna Corp. /zigman2/quotes/208431372/composite CI -4.87% rallied 4.0%, Anthem Inc. /zigman2/quotes/203808743/composite ANTM -5.39% hiked up 4.6%, Humana Inc. /zigman2/quotes/203095337/composite HUM -2.43% climbed 4.0% and Centene Corp. /zigman2/quotes/208900023/composite CNC -5.49% advanced 4.4%. On Tuesday, Raymond James analysts wrote that a Sanders nomination or a contested Democratic convention "increases the likelihood of a Trump victory, and potentially even an all-Republican government," which they said would be good for the broader stock market.