Clinton spokesman Brian Fallon says the Clinton campaign has offered three different dates to debate Sanders in New York. Sanders is pressing for a debate before the state's April 19 primary.
Clinton's team says the Sanders camp has rejected debate offers for April 4, April 14 and April 15.
Fallon says the Sanders campaign should stop using the New York primary as a "playground for political games and negative attacks."
The Democrats last debated in March and have been negotiating two more debates in April and May.
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