After a brief tightening of Pennsylvania's Senate contest between Rep. Joe Sestak (D-Pa.) and former Rep. Pat Toomey (R-Pa.), the Republican has reasserted his lead less than a week ahead of Election Day, according to a recent poll.

A new Franklin & Marshall College poll out Wednesday puts the Republican back on top by 7 percentage points — 43 percent to 36 percent among likely voters. 

Three polls released in the last two weeks showed a narrowing of Toomey's lead. A Rasmussen poll from last week had the Republican up by just 4 points, while a Quinnipiac poll gave Toomey just a 2-point edge and numbers from Public Policy had Sestak up one point.

But the latest numbers are in line with tracking numbers from Muhlenberg College, which put Toomey up 5 points. 

Franklin & Marshall pollster Terry Madonna said that among voters leaning toward casting their vote for Toomey, two-thirds say they oppose President Obama. Additionally, half the likely voters for Sestak say their vote is in support of the president.