Democrats will have a difficult time retaking the House, despite the party’s recently optimism about the November elections, according to a recent analysis by the nonpartisan Rothenberg Political Report.

The party will need a net gain of 25 seats to retake the chamber lost to Republicans in the 2010 elections, which even President Obama described as a “shellacking.”

The politically-influenced redrawing of congressional districts, based on new Census numbers, gives neither party a clear advantage in 2011, Stuart Rothenberg, of the Washington-based firm, said last week.

However, House Democrats retiring in such states as Arkansas, Indiana, North Carolina, Oklahoma and even Illinois along with a “surprising” problem in recruiting good candidates leaves the party with “limited” opportunities, he says.