Question

what is a valid reason that could keep you from being eligible to vote on election day?
you have been convicted of a felony.
you are a registered nonpartisan.
you do not own property.

Explanation:

In most jurisdictions in the U.S., a felony conviction can result in the loss of voting rights, either temporarily or permanently, which affects eligibility to vote on Election Day. Being a registered nonpartisan does not impact voting eligibility, as nonpartisan voters can still participate in elections (including primaries in many areas). Property ownership is not a requirement for voter eligibility in modern U.S. elections.

Answer:

You have been convicted of a felony.