Arizona is a new front line in the current debate on guns in America

"Republicans like McSally know that their success in 2020 could depend on their ability to hold some of those suburbs that have traditionally voted for Republicans, but who have actually started to break away from the party in the Trump era," said Pace. "Many of the Republicans we talk to say that this issue, gun control, could take this party trend further."

2) Do sanders slip into Iowa?

Bernie Sanders could be faced with worrying signs coming from Iowa, the first in the country.

Just after a trip to the Iowa State Fair, Lisa Lerer of the New York Times reports that very few voters to whom she spoke have expressed much interest for the Vermont Senator.

"It's fascinating because, of course, Iowa is the state that fed Bernie Sanders' insurgency campaign last time," said Lerer. "Now he seems to have problems there."

Sanders has lost ground in some recent polls, but his aides said he was still early in the race and that most of his followers had not begun to pay serious attention to it. But with Sanders slipping into the polls, there are signs that the campaign is starting to get nervous – among them, Sanders' more explicit criticism of media coverage in recent days.

"Bernie Sanders lost the primary last time but may have won the battle," Lerer said. "The question this time is to know if there are other people that the Democrats would prefer to keep."

3) Awareness of Warren Native Americans

Elizabeth Warren returns to an issue that was one of the first sources of controversy for her presidential campaign.

Laura Barrón-López of Politico reports that the Senator of Massachusetts will participate this week in Sioux Falls, Iowa, at a Native American presidential forum, following the publication of a political plan regarding the problems of Native Americans.

"This will be the first reaction of the tribal chiefs as to whether they really feel as if she is going in the right direction with this proposal which is one of the most important that she has published up to date. Now, "said Barrón-López.

Warren's campaign had a difficult start due to the controversy surrounding his claims of Native American ancestry. Last year, his decision to release the results of a DNA test sparked criticism from some Native American leaders, resulting in an apology from the senator.

The fact that she appears at the forum could, however, suffice to differentiate Warren from some of his competitors.

"Joe Biden, Kamala Harris and Cory Booker do not seem to be present," said Barrón-López, "and they are criticized for that."

4) The battle for the nomination

A hideous battle is brewing in the Senate following the recent appointment of President Donald Trump to a court.

Seung Min Kim of the Washington Post reports that Steven Menashi, Trump's recent circuit court candidate, is already fueling tensions between Democrats and Republicans. Menashi was named for the objections of his minority senator Chuck Schumer in his home country, and some Democrats ask Menashi to withdraw for publishing controversial articles on the legislation.

The Republicans, however, retaliate, paving the way for a heated battle to win the bid.

"Remember how important the courts are to this president, but also especially to Senate Majority Leader Mitch McConnell," said Kim. "We have 43 circuit court judges confirmed under the current president's mandate, about 100 district court judges, and they will continue to confirm more and more as the rest of the term continues."