A new Field Poll shows Governor Jerry Brown has a 20-point lead in his re-election campaign against Republican Neel Kashkari.

The survey released Wednesday shows the Democratic governor with 52 percent support among likely voters and Kashkari with 32 percent.

The rest are undecided.

It's the first public opinion poll since the June 3 primary, when Brown and the former U.S. Treasury official emerged as the front-runners.

Kashkari helped lead the federal bank bailout during the recession.

He has a long way to go to mount a credible challenge to Brown, who amassed $21 million for the fall campaign and has spent his life in California politics.

The poll surveyed 982 likely voters from June 5-22 and has a sampling error margin of plus or minus 3.2 percentage points.