| Election Name: | 2010 Pennsylvania House of Representatives election |
| Country: | Pennsylvania |
| Type: | legislative |
| Ongoing: | no |
| Previous Election: | 2008 Pennsylvania House of Representatives election |
| Previous Year: | 2008 |
| Next Election: | 2012 Pennsylvania House of Representatives election |
| Next Year: | 2012 |
| Seats For Election: | All 203 seats in the Pennsylvania House of Representatives |
| Majority Seats: | 102 |
| Election Date: | November 2, 2010 |
| Leader1: | Sam Smith |
| Leader Since1: | January 2, 2007 |
| Party1: | Republican Party (United States) |
| Leaders Seat1: | 66th |
| Last Election1: | 99 |
| Seat Change1: | 13 |
| Seats After1: | 112 |
| Leader2: | Keith McCall |
| Leader Since2: | January 6, 2009 |
| Party2: | Democratic Party (United States) |
| Leaders Seat2: | 122nd |
| Last Election2: | 104 |
| Seat Change2: | 13 |
| Seats After2: | 91 |
| Map Size: | 450px |
| Speaker | |
| Before Election: | Keith McCall |
| Before Party: | Democratic Party (United States) |
| After Election: | Sam Smith |
| After Party: | Republican Party (United States) |
The 2010 elections for the Pennsylvania House of Representatives were held on November 2, 2010, with all districts being contested. Necessary primary elections were held on May 18, 2010.[1] The term of office for those elected in 2010 will run from January 4, 2011, until November 30, 2012. State Representatives are elected for two-year terms, with the entire House of Representatives up for election every two years.
| Affiliation | Seats at Last Election | Seats at End of Legislative Session | Seats after Election | Change Since Last Election | ||
|---|---|---|---|---|---|---|
| Democratic | 104 | 102 | 91 | -13 | ||
| Republican | 99 | 101 | 112 | +13 | ||