Obama Democrats: Do any GOPers have the right stuff to win?

Story highlights

  • Dan Pfeiffer: GOP faces an uphill battle in the Electoral College and most of its leading candidates seem ill-suited to overcoming that
  • He says Rubio may be best positioned to challenge the Democratic candidate but so far voter enthusiasm for him seems slight

Dan Pfeiffer is a former senior adviser to President Barack Obama and served in the White House in a variety of roles, including communications director. The opinions expressed in this commentary are his.

(CNN)When thinking about the 2016 election and judging the strengths and weaknesses of the Republican candidates, it's important to keep two things in mind:

1) As