Does anybody here really think Jeb will be the nominee anymore?

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Bush still has the backing of the party establishment and tons and tons of money to throw around.
Improving his debate skills couldn't hurt.

Bush doesn't have the backing of the establishment.  If you look at who in the party has endorsed who, you'll see that barely anybody in elected office has endorsed a candidate.  They're certainly not falling over themselves to get behind Bush (or anybody else).  Instead the establishment is taking its time, waiting to see who among the significant number of establishment friendly candidates does well.

In 2012, Romney was the only candidate with a shot at establishment support (except for a brief moment when it looked like Perry could challenge him).  Today we have Bush, Walker, Rubio, Kasich, and Christie all vying for the ideological space that Romney alone (okay yeah, and Huntsman) took up in 2012.

[Mehmentum]

Jeb Bush really reminds me of what Hillary's 2008 campaign was where he is the party establishment's choice, raises a lot of money, and on paper seems like a shoe-in to win. The problem being him not clicking with voters and eventually being beaten.

His debate performance didn't change that for me. He's going to have to step up his game in the upcoming ones.

Jeb wishes he was as strong a candidate as Hillary was in 2008. Just look how many endorsements she had at that point back then.

Yeah, Clinton '08 was in a much better position than Bush right now.  In addition to the endorsement advantage, she held like a 10 point lead over her biggest challengers.  Obviously this was not insurmountable but also obviously a stronger position than anybody in the GOP field currently has.