As a result of the crisis at the democratic national convention in 1968, many democrats left the country. the electoral system was changed. people lost faith in the political system. the democratic party won the presidency.

- three-quarters or two-thirds..

- "the constitution provides that an amendment may be proposed either by the congress with a two-thirds majority vote in both the house of representatives and the senate or by a constitutional convention called for by two-thirds of the state legislatures."

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