Another Democrat has entered the race to replace Rep. Joe Sestak (D). Teresa Touey, a former aide to the late Sen. Edward Kennedy (D-Mass.), told local news sources that she has moved to her hometown district and planned to announce her candidacy this week.

State Rep. Bryan Lentz (D) announced his campaign months ago for the seat held by Sestak, who is running for Senate in 2010. Lentz has already locked up significant support from Democrats in the district, including the endorsement of local unions in Delaware County.

Former U.S. Attorney Patrick Meehan announced his candidacy for the GOP nomination earlier this month, and the race for the swing district seat is expected to be highly competitive next year.