For most Republican voters, last week’s announcement by Texas Sen. Ted Cruz that he would pick former Hewlett-Packard executive Carly Fiorina as his running mate would do little to move the needle in Cruz’s favor, according to a new Morning Consult poll.

The survey, conducted from April 29 through May 2, found that Fiorina’s placement on the ticket with Cruz caused 25 percent of Republican voters to say they are more likely to vote for him, while 24 percent said they are less likely to vote for him. About half (51 percent) said they did not know or had no opinion.