Married taxpayers claimed on a joint return:
Son
Son's fiance
Fiance's child (son is not the father of child)
All 3 lived in taxpayer's home all of 2008. None of them earned more than gross income limit of $3500. Therefore, taxpayers provided more than 50% support for all three and claimed them on tax return.
However, fiance's mother, who lives in a separate state claimed the fiance and the fiance's child even they did not live with her and she did not provide any support whatsoever. She filed first and claimed both of them.
Does the taxpayer have a right to claim them?