A new Field poll released Tuesday shows that while Democratic presidential nominee Hillary Clinton still enjoys a sizable lead among likely voters in California, her lead is slipping significantly, falling seven points since July.

“While Clinton continues to hold a sizable seventeen-point statewide advantage (50% to 33%) over Trump in this year’s presidential election, that margin is down from twenty-four points in July, prior to the Democratic and Republican national conventions,” the poll reports.

The key, the poll reports, is a drop in Clinton’s favorability. “More Californians now view her unfavorably (53%) than favorably (47%), a reversal from July. In addition, a very large proportion of the state’s electorate (41%) now reports having a ‘very unfavorable’ opinion of Clinton,” the Field poll reports. It notes that while Trump’s favorability has increased somewhat from July, the Republican presidential nominee is still seen unfavorably by nearly 7-in-10 likely voters in California.

The poll also notes that Trump is narrowly winning California’s interior regions, while Clinton leads coastal counties by a nearly two-to-one margin. Trump also leads among voters over 65, among evangelicals, and among voters with “no more than a high school education.” Clinton leads among voters under 40, non-evangelicals, and college graduates. In addition, “Clinton holds a three-to-one advantage among the state’s Latino voters, is favored six-to-one among African Americans and has a greater than two-to-one lead among Asian Americans,” though her lead is only six points among non-Hispanic white voters.

The Field poll also showed 58% of California’s registered voters approve of President Barack Obama, while 42% disapprove.

The poll was conducted online among 1,800 registered voters and 1,426 likely voters. No margin of error was reported.

Joel B. Pollak is Senior Editor-at-Large at Breitbart News. His new book, See No Evil: 19 Hard Truths the Left Can’t Handle, is available from Regnery through Amazon. Follow him on Twitter at @joelpollak.