31 years, 36 years, they have nothing on President John Tyler. Tyler served in the U.S. House of Representatives until March 5, 1821, left to return to private life, fairly quickly got into state government, became governor, then elected to the Senate, then elected VP, then became President upon W.H. Harrison’s death, then returned to private life for over 15 years, and then, in January 1862, returned to the House of Representatives after an absence of almost 41 years. Of course, this time, it was the House of Representatives of the Confederate States of America ....
Didn’t that WINO die before he could take his seat in the Confederate Haus?
Anyway
http://go.bloomberg.com/political-capital/2012-11-16/bloomberg-by-the-numbers-32-2/
That article seems to confirm that Nolan holds the US House record and that Grow was the previous record holder.