According to a recent CNN poll of GOP voters, the majority think that both Kasich and Cruz should drop out of the race entirely.
cnn.com reports: Trump also prompts the most enthusiasm of the remaining three candidates: 39% say they will be enthusiastic if he wins the nomination, 21% would feel that way about Cruz and 16% about Kasich. More say they would be dissatisfied or upset with Cruz (45%) or Kasich (39%) than say the same about Trump (33%).
That lack of enthusiasm for the candidates trying to catch Trump may be behind tepid support for the race to even continue. About two-thirds say that Kasich should drop out of the race now that he is no longer able to win the delegates needed to capture the nomination through the primaries and caucuses, a smaller majority of 52% says the same about Cruz.