Your idea that women promoting women candidates based on their gender is "discrimination" is spurious. The American political power structure is primarily white  and male (80% & 80%), therefore, women encouraging women to vote for women candidates is not discrimination in the same way that the the political power structure is excessively skewed towards the interests of men. Men don't need to implore men to support male candidates because they already do by and large and male candidates in many cases are the only choice for voters. White men make up 31% of the population, yet they hold 65% of elected offices in the United States. This is the problem, not women encouraging other women to vote for women candidates.