[flyfree]

There are Constitutional qualifications.

Sure they are. But we aren't at that stage yet. We won't be until the electoral college votes (see Amendment 12). And with our system, that is after the general election. Again, if the Dems put up someone who is not qualified, those electoral votes will be thrown out, and, in our two party system, the Republican will end up with the most electoral votes and win the presidency.

So right now, it is up to the Dems to choose wisely. If they don't. Too bad, so sad. They will get in the history books and the worse DNC in history.

[DJ MacWoW]

The 12th Amendment says nothing about a qualification process. It only states: But no person constitutionally ineligible to the office of President shall be eligible to that of Vice-President of the United States.

It says nothing about a challenge on the grounds of qualification.