Besides Republicans Deborah Pryce, Dennis Hastert, Chip Pickering, other GOPers may retire. The Hawaii Reporter mentions possible retirements of Bill Young of Florida and Ralph Regula of Ohio.
However, according to the Hawaii Reporter, three other Republicans in the House might leave because of legal problems.
Hawaii Reporter:
.....In addition, House Republicans fear there may be some forced retirements thanks to legal controversies facing a trio of GOP members. Rep. John Doolittle of California, Rick Renzi of Arizona and Don Young of Alaska are all under active FBI investigation for their links to lobbyists.....
I guess the Republicans believe it is better to retire than to lose an election.