Dems now have 8 running for nomination in primary election, which takes place May 8.
Deadline for May ballot fast approaching.
Son-father conflict alleged.
Question may not appear on spring ballot.
Republicans plan to offer revised version of their own plan on Tuesday.
Kasich dismisses claim that two haven’t spoken in a year.
Talks under way to avoid ballot fights.
Opponents to GOP plan would fight two-front war