The constitution leaves qualifications for voting up to the states. If Delaware allows corporations to in certain state elections, it would follow that they’d be able to vote for congressional seats as well.
From article 1:
>The House of Representatives shall be composed of Members chosen every second Year by the People of the several States, and the Electors in each State shall have the Qualifications requisite for Electors of the most numerous Branch of the State Legislature.
Specifically, the 14th amendment's equal protection clause is seen to apply to voting rights (of which apportionment is perhaps the most unclear, but literally giving individuals multiple votes, as opposed to different weights is sort of a beyond obvious violation).
You'd be more likely to tune to your local classical station and hear techno. It'd be that out of character
All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside. No State shall make or enforce any law which shall abridge the privileges or immunities of citizens of the United States; nor shall any State deprive any person of life, liberty, or property, without due process of law; nor deny to any person within its jurisdiction the equal protection of the laws.