Florida Sen. Marco Rubio has from the start of the campaign been considered one of the more serious contenders for the 2016 Republican nomination, and there is little doubt he remains in the top tier. But according to a pair of recent articles, Rubio perhaps isn’t in as strong a position as he needs to be. From Politico:

Marco Rubio’s wake-up call

The hype surrounding Marco Rubio’s presidential campaign just smashed into the wall of reality.

First, the Florida senator’s team insisted it …