In North Carolina, another divisive Democrat primary takes shape and yet another DSCC-backed candidate continues to struggle in the polls as Cal Cunningham – who was recruited by the DSCC – lags far behind Secretary of State Elaine Marshall.  RollCall reports Marshall on Monday released the results of an internal poll showing her with a 26 point lead over her closest competitor in the crowded Democratic Senate primary….In an initial head-to head-matchup, Marshall took 31 percent while former state Sen. Cal Cunningham took 5 percent, attorney Ken Lewis took 4 percent and 56 percent were undecided. The survey of 600 likely Democratic primary voters was conducted by Lake Research Partners for Marshall’s campaign Feb. 11 to 15 and had a 4.4 point margin of error.