A new Rasmussen poll finds Republican Pat Toomey up 7 points in the race for Pennsylvania's open Senate seat. Leading Democrat Joe Sestak 45%-38%, little has changed since last month when Toomey led by 6 points.

With less than four months to go, 12% of voters remain undecided. The survey of 750 likely voters was conducted July 14 with a margin of error of +/- 4%.

Toomey, a former congressman from Allentown, and Sestak, a current Congressman from Philly's southwestern suburbs, are evenly well-known among the state's voters. Just 15% are unsure how they feel about each candidate. Both also have favorable ratings 50% or above, with Toomey holding a 6-point lead in that category.

Toomey also has a lead in fundraising after a strong second quarter. He brought in $3.1 million from April through June, leaving him with $4.65 million to spend. Sestak had a successful fundraising quarter as well, raising nearly $2 million -- $1.6 million of which was brought in after the May 18 primary, in which he knocked off the party-switching incumbent, Arlen Specter.

While Rasmussen continues to find Toomey with leads just outside the margin of error, Quinnipiac's last two surveys have shown the race to be even closer. A poll released last week had the race tied, and its May survey, released just before the primaries, found Toomey up 2 points.

RCP currently rates this race a Toss Up.

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