[TomGuy]

IIRC, Carl Cameron, on FoxNews after the debate, confirmed to Brit that Kerry 'signatured'/sponsored 56 bills that passed both the House and Senate, but only 5 of those were signed into law by a President.

[So, Presidents pocket vetoed 51 of Kerry's bills.]

[dennisw]

IIRC, Carl Cameron, on FoxNews after the debate, confirmed to Brit that Kerry 'signatured'/sponsored 56 bills that passed both the House and Senate, but only 5 of those were signed into law by a President........

SENATE ONLY! No pocket veto. But I will confirm this to be 100% for sure

[dennisw]

From the Fresno Bee:

Kerry retorted that the Senate has passed 56 bills that he wrote. http://www.fresnobee.com/local/story/9283181p-10187989c.html

This is your best answer, from the John Kerry website. It's an instant response to last night's debate. 

57 bills and resolutions John Kerry has sponsored over the years have passed the U.S. Senate. Countless others have been improved because of his work, including the Clean Air Act, the Children’s Health Insurance Program and the COPS program.
http://blog.johnkerry.com/rapidresponse/archives/003473.html#more

Notice the sly wording, how Kerry's 57 bills and resolutions passed the US Senate. Only got past the US Senate and no further is my conclusion. However this 57 most likely includes the 9 the Republicans mentioned, that made it past the House and got signed by the President into law. So the Kerry breakdown is probably:

   9      John Kerry  bills and  resolutions got signed into law

 48    John Kerry  bills and  resolutions got passed by the US Senate and got no further. IOW they were duds.