PITTSBURGH (KDKA)- Tens-of-thousands are expected to head to the polls today here in Pennsylvania.

Polls in Pennsylvania are open from 7 a.m.-8 p.m.

The main race on the ballot is the race for Governor.

Incumbent Republican Tom Corbett is battling Democtratic challenger Tom Wolf. Wolf has lead by a large margin in the polls leading up to election day.

Both candidates got big endorsements this past weekend,  with Corbett campaigning with New Jersey Governor Chris Christie and Tom Wolf campaigning with President Barack Obama.

Another key race is in the 12th congressional district where incumbent Republican Keith Rothfus is taking on Democratic challenger Erin McClelland.

There are also a number of state house races: the 19th, 20th, 25th, 33rd, 35th, 39th, 45th and 46th districts.

For a full list of where to vote go here: