Democratic

The GOP is still favored to control the House. Donald Trump hasn't been the boon Democrats need. But some longtime GOP incumbents could go down, as Democrats stand to pick up a dozen or more seats.

More women are likely to hold seats in Congress than ever before after this election. But despite being a majority of the electorate, they'll still make up only about 20 percent of the next Congress.

Trailing Hillary Clinton in the delegate race, Bernie Sanders says the Nevada state party treated him unfairly and denied that his supporters incited violence and leveled threats toward officials.

Democrats believe a perfect storm of the first female presidential nominee coupled with Donald Trump as a foil will help them take back the Senate with female challengers.

How much will Donald Trump pad his lead, and what will Ted Cruz do next? Even if Bernie Sanders wins, Hillary Clinton's lead is virtually insurmountable. And the GOP Senate primary is one to watch.

Among them: Two incumbent Pennsylvania congressmen are on the defense amid questions about their ethics and personal relationships; and Maryland candidates for Senate are divided by race and gender.

Donna Edwards is vying to be just the second black woman ever elected to the Senate. But not all of the state's black female leaders or African-American members of Congress are lining up behind her.

The Associated Press has called Kansas and Maine for Cruz. Meanwhile, Democrats are caucusing in Kansas and Nebraska, and both parties are voting in Louisiana. Republicans are caucusing in Kentucky.

Donald Trump and Hillary Clinton are expected to roll to victories in the South, leaving their rivals trying to scrape for wins elsewhere on the biggest voting day of the year so far.