All from Rasmussen Reports.

Pennsylvania:

Republican Pat Toomey now leads incumbent Senator Arlen Specter 49% to 40% in Pennsylvania’s race for the U.S. Senate. The latest Rasmussen Reports telephone survey of Pennsylvania voters also finds Toomey with a 43% to 35% lead over Democratic challenger Joe Sestak.

Missouri:

Republican Roy Blunt now holds a six-point lead over Democrat Robin Carnahan in Missouri’s race for the U.S. Senate.
A new Rasmussen Reports telephone survey of likely voters in the state finds Blunt ahead of Carnahan 49% to 43%. Three percent (3%) prefer some other candidate, and five percent (5%) are undecided.

And if we could just find a qualified candidate in New York:

There’s an old political axiom: You can’t beat somebody with nobody. At least not in real life. But nobody comes pretty close in a new Rasmussen Reports survey of one of New York’s two U.S. Senate races this year.
Thirty-nine percent (39%) of likely voters favor incumbent Democratic Senator Kirsten Gillibrand, while 34% opt for an unnamed generic Republican candidate. Ten percent (10%) favor former Tennessee Congressman Harold Ford Jr., now a Manhattan investment banker. Seventeen percent (17%) are undecided.
Ford is considering a Democratic Primary challenge of Gillibrand, who has been widely criticized in her own party ever since Governor David Paterson named her to the seat vacated by Hillary Clinton last year. Gillibrand leads Ford 48% to 23% among likely primary voters.