Groups want Senate to extend legislative session
Senators talk of extending session to vote on gay ban
Military leaders each express concerns, but confidence in ability to implement
Mass. senator bases decision on Gates' recommendation
McCain criticizes questions, response rate of survey
Gibbs said Gates has made calls to lawmakers
All 42 members of GOP caucus penned names to missive
President wants Congress to act to repeal gay ban
Gates urges Congress to repeal ban by year's end
Lame duck session seen as do-or-die time for gay ban
