[TomGuy]

What are the chances the Dems will boot Obama for Hillary before their Convention?

Nil ....

However, I have said in the past, that, if Obama's numbers are low (20s or 30s) by the Convention, the DNC may try to force him to step down -- using some feigned illness or similar, and possible go for Hillary.

If the internal polling in various 'swing' states show Obama losing like Carter, the Dems might be willing to change their ticket. Hillary could be formidable against the weakly GOP nominee.

However, the Dem establishment doesn't like the Clintons -- but they may have Obamaoverload and may like Obama even less.

[no-to-illegals]

some feigned illness or similar

Awaiting the report zer0 has AIDS to be broadcast.

[Raycpa]

However, I have said in the past, that, if Obama's numbers are low (20s or 30s) by the Convention, the DNC may try to force him to step down ,

No way. They can't afford end their support of the first gay, black president. Never happen.