(CNN) Several factors that pollsters look at are predicting a "blue wave' in the fall elections, and some observers are calling 2018 the "year of the woman" given the number of female candidates running across the country. And it seems female voters are getting ready to strengthen the Democratic Party.

In CNN's June poll , half of voters said they'd vote for a Democratic candidate in the upcoming midterm elections, with 42% saying they'd vote for a Republican. This question is colloquially referred to as the generic ballot, and it's a useful measure of how the two parties will perform in an election.

There are other predictors that find a "blue wave" is coming as well.

First off, more people (especially women) are planning on voting for the Democratic candidate this year. This is somewhat expected since the opposing party holds the presidency and majorities in both chambers of Congress.

The amount of people saying they'll vote for the Democratic candidate has increased by 5 percentage points in total, by 1 percentage point among men and by 8 percentage points among women compared with near this time before the midterm elections in 2014. The men's vote for the Republican candidate also has increased, but only by 2 percentage points, while female support for the GOP has dropped by 10 percentage points.

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