A 2-to-1 majority of investors believe that there's no way the government can significantly address the deficit without raising taxes, according to a new poll from Bloomberg.

That's a big vote of no-confidence from the investing community to Republican plans. Earlier this week, Speaker of the House John Boehner took any tax increases off the table as part of the negotiations over the deficit and debt limit.

Further, the Bloomberg poll shows most investors don't believe Republican bluffs on the debt ceiling, with 7 out of 10 saying the limit will be raised.

1,263 investors responded to the poll.

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