You'd get most Democrats to support voter ID if it came with a national ID card, plus an affirmative duty to some agency to ensure that everyone has access to one.
We have neither of those things. The closest we have is driver's licenses, because our culture is such that everyone eligible wants one. The only broadly available federal photo ID is the passport.
Requiring a driver's license, passport, or equivalent is unconstitutional, though. This is because even non-driver equivalents cost money in most places, making it an unconstitutional poll tax. That's why even the places with strict voter ID laws allow really strange forms of identification - they rely mostly on people not knowing this.
We have neither of those things. The closest we have is driver's licenses, because our culture is such that everyone eligible wants one. The only broadly available federal photo ID is the passport.
Requiring a driver's license, passport, or equivalent is unconstitutional, though. This is because even non-driver equivalents cost money in most places, making it an unconstitutional poll tax. That's why even the places with strict voter ID laws allow really strange forms of identification - they rely mostly on people not knowing this.