Senate Republicans are moving to keep the Supreme Court at nine justices as a growing number of Democratic 2020 contenders have expressed an openness to expanding it.

Roughly a dozen Republican senators introduced the resolution on Monday that would keep the Supreme Court at nine justices.

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He added that he was introducing the constitutional amendment "to prevent the delegitimizing of the Supreme Court."

GOP Sens.(Pa.),(N.D.),(Tenn.),(Ind.), Cindy Hyde-Smith (Miss.),(N.D.),(Utah),(Neb.),(Utah),(Idaho), and(W.Va) are cosponsoring the resolution.