A poll commissioned by opponents of an $11 billion water bond shows only 34% of respondents planning to vote yes on the state ballot measure in November, while 55% said they'll vote no and 11% remain undecided.

"We are encouraged to see that voters across California share our view that this bond is a bad deal for taxpayers," said Tina Andolina, Legislative Director for the Planning and Conservation League.

The poll, by Tulchin Research, surveyed 600 likely voters and has a margin of error of 4 points.

Bond supporters questioned the results.

The poll is "based on one question from a longer poll, with no information about prior questions which could have tainted the results. Their results are very different from our own internal polling," said Jim Earp, Executive Director of the California Alliance for Jobs and co-chair of the Alliance for Clean Water and Jobs.

The bond, put on the ballot last year by state lawmakers, would pay for a variety of projects -- potentially including a dam east of Fresno - which supporters say are needed to solve the state's water woes. Backers include big Valley farm groups such as Westlands Water District.

But some farmers on the east side are in opposition, fearing money for the Valley dam is not guaranteed. Meantime, some fiscal conservatives worry about the size of the measure, by far the largest water bond in state history.

The poll showed only 20% of Republicans supporting the measure, which if true would spell big-time trouble for a measure that is also opposed by liberal-leaning environmental groups. Democrats were split 43% yes and 46% no.

One of the biggest bond supporters, Gov. Arnold Schwarzenegger, conceded today that passage would be "very challenging" but he hopes that voters "know the difference between spending money and investing in the future," Capitol Alert reported.