Even if he captures every single delegate awarded to candidates who win a plurality of the votes in a state, he would still need to win approximately37 percentof the remaining delegates to capture the nomination — under the various and often complex rules that each state uses to allocate these delegates.
Currently, the Real Clear Politics polling average shows Trump leading the GOP field with about30 percentof the vote, so his current polls likely do not give him enough support to capture the nomination outright.