Amy McGrath. Photo: Jason Davis/Getty Images

Retired Marine fighter pilot Amy McGrath defeated state Rep. Charles Booker in the race for Kentucky's Democratic Senate nomination, AP announced Tuesday.

Why it matters: McGrath was deemed an establishment favorite until Booker's progressive candidacy surged following national Black Lives Matter protests.

  • Booker racked up a number of high-profile endorsements, including Rep. Alexandria Ocasio-Cortez (D-N.Y.), Sen. Bernie Sanders (I-Vt.), Sen. Elizabeth Warren (D-Mass.) and former HUD Secretary Julián Castro.
  • Kentucky continues to deal with the fallout from the March police killing of Breonna Taylor in Louisville, and Booker has actively engaged with demonstrations calling for justice.

The big picture: McGrath garnered national attention in 2018 when she ran against Rep. Andy Barr (R) in Kentucky's 6th Congressional District, but she ultimately lost by about 10,000 votes.

  • She will now take on incumbent Senate Majority Leader Mitch McConnell in November in what's likely to be an expensive race as fundraising machines for both parties gear up.
  • However, McConnell is still the prohibitive favorite. Cook Political Report rates the race as "likely Republican."

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Colorado: Hickenlooper wins Democratic Senate primary

Former Colorado Gov. John Hickenlooper Photo: Caroline Brehman/CQ Roll Call

Former Colorado Gov. John Hickenlooper won the state's Democratic primary for U.S. Senate on Tuesday evening, per AP.

Of note: Hickenlooper wasn't the only eye-catching win Tuesday night. Lauren Boebert (R) defeated the Trump-endorsed incumbent Rep. Scott Tipton (R) in the Republican primary for Colorado's third congressional district.

Biden releases plan to strengthen coronavirus supply chain

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Joe Biden's campaign released a three-part plan Tuesday to rebuild U.S. supply chains in the wake of the coronavirus pandemic, and it's centered around the idea that the country is more vulnerable to global disruptions in spite of President Trump's "America First" rhetoric.

Why it matters: Biden is proposing a way to make sure the U.S. doesn't rely on other countries for personal protective equipment (PPE) and other related medical supplies. That's another way of acknowledging that we're not getting over this health crisis anytime soon.

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The major police reforms that have been enacted since George Floyd's death

NYPD officers watch a George Floyd protest in Manhattan on June 6. Photo: Scott Heins/Getty Images

Nationwide Black Lives Matter protests sparked by George Floyd's killing have put new pressure on states and cities to scale back the force that officers can use on civilians.

Why it matters: Police reforms of this scale have not taken place in response to the Black Lives Matter movement since its inception in 2013, after George Zimmerman's acquittal for shooting Trayvon Martin, an unarmed Black teenager.