Their own numbers in their filters at their site:
http://polling.reuters.com/#poll/TM651Y15_13/filters/LIKELY:1
Of 928 likely voters 517 were female. Using the rule of thumb of 52/48% among likely voters, these numbers show 56% female. http://polling.reuters.com/#poll/TM651Y15_13/filters/LIKELY:1,SEX:2|1