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Democratic U.S. Sen. Dianne Feinstein announced in October of last year that she would run for a sixth term in November. She is heavily favored to win re-election, but her most competitive challenger is a Democrat, not a Republicans. The state’s relatively new top-two primary system means that all candidates regardless of party run on a single primary ballot with the top two candidates moving on to the general election. State Senate President Pro-Tem Kevin de Leon, a Democrat, is the most credible challenger, and he is running to Feinstein’s left. Another eight Democrats filed, but none pose any threat. Although 11 Republican candidates filed for the primary, there is not a first-tier candidate in the group. As a result, it is very unlikely that the general election will include a Republican. Another 11 candidates filed as independents or under the banner of other parties. Feinstein is the favorite in a general election contest against De Leon. While he may be the more progressive candidate in a heavily Democratic

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