Democrats sure don't. They want them to vote and everything.
The following red states allow felons to vote after completing their sentences (carceral sentences in some cases, or complete sentences and fines in others):
Alaska, Arkansas, Florida (1), Georgia, Idaho, Indiana, Iowa (2), Kansas, Kentucky (3), Louisiana, Missouri, Montana, Nebraska, North Carolina, North Dakota, Ohio, Oklahoma, South Carolina, South Dakota, Tennessee, Texas, Utah, and West Virginia.
That's the overwhelming majority of them. A couple of them have exceptions for certain crimes like rape and murder, but for the rest, if you can finish your sentence, you can probably vote.
(1) Sort of -- the state government has intentionally made a mess of the initiative that passed 65-35.
(2) While the Iowa constitution bars felons from voting unless they have applied to the governor to have voting rights reinstated, Gov. Reynolds (a Republican) has a standing executive order automatically reinstating voting rights of felons upon completing their sentences unless they were convicted of murder.
(3) Similar to (2), except that Gov. Beshear's executive order applies only to those convicted of non-violent offenses.