The GOP is likely to have a better chance in Porter's district with her out of the picture. Enter Katie Porter, the first candidate to announce her intention to run for Feinstein’s seat. Her Senate run has a potential downside for national Democrats that should be clear. The problem Porter’s campaign raises for the Democrats has nothing to do with her chances of winning or what she would do in the Senate. If they decide to seek the Senate seat, there will be no cost to House Democrats because their replacements are almost sure to be Democrats as well.

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