Bernie Sanders and Hillary Clinton have been eyeing the California primary. California is one of six states hosting nominating events on June 7.

The latest early polling data shows good news for the Sanders campaign. Just weeks ago, Sanders was trailing Clinton in most polls by double digits. Three of the most recent polls show Sanders within two points of Clinton.

Sanders has made up a lot of ground in recent weeks.The challenge for Sanders is the 475 pledged delegates at stake will be split proportionally based on the results. Clinton leads Sanders by more than 270 delegates.

Sanders continues to eye a contested Democratic National Conventional. He explained his reasoning to CNN in a recent interview.

“Hillary Clinton will not have the requisite number of pledged delegates to win the Democratic nomination at the end of the nominating process on June 14. Won’t happen. She will be dependent on superdelegates. The Democratic National Convention will be a contested convention,” Sanders told CNN.

Here’s a look at the latest California polls.

RealClear Politics Average

RealClear Politics keeps a running average of the California polls. The average includes data from three polls. The CBS News/YouGov poll conducted on May 31-June 3, the NBC/WSJ/Marist poll conducted May 29-31 and the Field poll conducted May 26-31.

Candidate Vote% Hillary Clinton 47.7 Bernie Sanders 45.7

CBS News/YouGov

The CBS News/YouGov poll was conducted on May 31-June 3. It has a margin of error of 5.0 percentage points.

Candidate Vote% Hillary Clinton 49 Bernie Sanders 47

NBC/WSJ/Marist

The NBC/WSJ/Marist poll was conducted May 29-31. It has a margin of error of 4.2 percentage points.

Candidate Vote% Hillary Clinton 49 Bernie Sanders 47

Field

The Field poll was conducted May 26-31. It has a margin of error of 4.1 percentage points.