Elected in 1994 by then-President William Clinton, Breyer, 83, has been a consistent liberal vote on the Supreme Court for nearly three decades.
Whoever is selected by Biden in the near future to occupy the position must be another young magistrate of the same ideological current so that he can serve for a long time, local media report.
Appointed for life, the Supreme has six conservative judges appointed by Republican leaders and three liberals nominated by Democrats.
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