Rep. Mark Critz’s (D) campaign released an internal polling memo today that showed him trailing his opponent, Rep. Jason Altmire (D), by 10 points.

Altmire led Critz, 47 percent to 37 percent, in the survey.

Keystone State Republicans moved Critz and Altmire into the same southwestern district when they redrew the Congressional map last year. Pennsylvania lost a House seat following reapportionment.

Critz’s pollsters, Jefrey Pollock and Joe Hickerson, wrote in the memo that “the race is essentially tied” with “voters who are already familiar with both candidates.”

The Global Strategy Group poll surveyed 400 likely Democratic primary voters Feb. 2-5. The margin of error was 4.9 points.

The primary is scheduled for April 24. But Pennsylvania GOP leaders say the primary could be delayed because they have to redraw the state legislative maps.