News Analysis: Trump’s obsession with Obama turns two-way race into a three-way tangle

More than three years after leaving the White House, Barack Obama appears to have taken up renewed residency. Not within its living quarters but, rather, inside President Donald Trump’s head. In a barrage remarkable even by Trump’s norm-demolishing standards, the nation’s 45th chief executive has spent a good deal of time lately savaging the 44th. Suddenly, a two-way race has turned into a …