Pennsylvania is a battleground once again.

From Rasmussen Reports:

Election 2012: Pennsylvania Senate 

 All emphasis below is mine, kiddies.

Thursday, October 11, 2012

Incumbent Democratic Senator Bob Casey, Jr. continues to attract 49% support from Pennsylvania voters, but his lead over Republican challenger Tom Smith is shrinking. 

The latest Rasmussen Reports telephone survey of Likely Pennsylvania Voters shows Casey leading by four, 49% to 45%. One percent (1%) plans to vote for someone else, while five percent (5%) remain undecided. (To see survey question wording, click here.) 

This Pennsylvania survey of 500 Likely Voters was conducted on October 9, 2012 by Rasmussen Reports. The margin of sampling error is +/- 4.5 percentage points with a 95% level of confidence. Field work for all Rasmussen Reports surveys is conducted by Pulse Opinion Research, LLC. See methodology.