Warren Buffett isn't the only rich guy who wants to higher taxes on the rich.

A new survey from Spectrem Group found that 68% of millionaires (those with investments of $1 million or more) support raising taxes on those with $1 million or more in income. Fully 61% of those with net worths of $5 million or more support the tax on million-plus earners.

Buffett, as you might recall, has proposed raising taxes on million-plus earners, saying the ultra-rich pay lower rates than everyday workers.

Rich people's opinions of Buffett remain fairly positive in the wake of his tax-me-more crusade. More than a third of millionaires and ultra-high-net-worths said they have a more positive opinion of Buffett after his tax proposal. Only 19% of millionaires and 22% of the $5 million -plus group said they had a more negative opinion of him after the proposal.

More than 40% of both groups said their opinion hadn't changed.