Former Republican presidential candidates Dr. Ben Carson and Herman Cain said Ted Cruz’s announcement of Carly Fiorina as his running mate will not be a big enough boost to his campaign, which currently lags behind Donald Trump’s delegate count by 425.

The Texas senator set an unofficial record Wednesday afternoon when he declared the former Hewlett Packard CEO his vice presidential pick. It’s the earliest in an election season — three months before the convention — that a candidate has ever picked a partner.