Good Friday morning. Here are some of the stories making news in Washington and politics today.

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• There is a new wedge issue in the Democratic presidential primary: Whether or not it is fair game to question the legacy of President Barack Obama, who is perhaps the most respected and unifying figure in the party. That issue emerged in Wednesday’s debate when several candidates used elements of the Obama record to attack former Vice President Joe Biden.

• Five hours of debating over two nights. A widening rift between the party’s populist and centrist wings. Strong messages from the race’s leading progressives. A shaky front-runner. Here is what we learned about the 2020 Democratic primary from the debates on Tuesday and Wednesday nights.

• There’s little incentive in dropping out of the race now, but it’s inevitable that the 24-candidate field will eventually get smaller. The question is, when will it happen?