As she noted, she won the Irish American vote in New Hampshire by 44% to 28% over Obama, a significant margin among a sub group that represents 18% of the electorate there.
The Irish vote on Super Tuesday, February 5, will also be important. New Jersey, New York and Connecticut are about 40% Catholic, with the Irish making up a large percentage of that. Clinton will likely sweep all three, with Obama winning Illinois and some other states.
It could all come down to California, where Clinton at present has a sizeable lead. But in this year of shocks and surprises, no one can say for certain where it will all end up.