NBC News: “Harris was difficult to pin down ideologically in the Democratic presidential primary, which left many voters wondering what she stood for and hurt her candidacy and ultimately forced an early exit last December before the first votes were cast.” “But it also now makes her a more complicated target of attacks by Trump, who has also struggled to land a punch on Biden: During the Democratic primary, Harris was a rare candidate who polled near the front of the pack but never earned a derisive nickname from the president.” Politico: The reasons why Joe Biden picked Kamala Harris. The Week: 4 ways Kamala Harris just made history.