At a time when the Democratic base is more restive than it has been in decades, Sen. Dianne Feinstein ignited a firestorm earlier this week when she refused to back the impeachment of President Trump and instead called for “patience” over his presidency.

The statements — provocative in Democratic circles and near-heretical in her hometown of San Francisco, where she made them — reflected a moderation and pragmatism that have been hallmarks of Feinstein’s career. But these qualities, after proving politically advantageous for decades, could become an albatross because of the state’s shifting demographics and political leanings as the 84-year-old decides whether to seek a sixth term.