any political party. 5. Enforcement and remedies (a) Right of action (1) In general Any eligible voter of a State may bring a civil action before a 3-judge court convened in accordance with section 2284 of title 28, United States Code, for a violation of section 3 or 4. (2) Court order A court in a civil action under this subsection— (A) may issue an order— (i) invalidating the districting plan of such State on the grounds that the plan violates section 3 or 4