Heading into the voting, a fear of unforced errors plagued the Democrats, as a result of the state's unusual primary election system, which allows the top two vote getters regardless of party to advance to the general election ballot. Because of California's "jungle primary", candidates from all parties appear together on the ballot and the top two finishers advance to a runoff in November.
Democratic leaders continue to coach their candidates to steer clear of the fireworks surrounding Mr Trump and the probe into Russian interference in the 2016 presidential race, both to reinforce their focus on local concerns and to avoid riling Republican voters.
Democrats will likely also play up Trump's support for Cox - including election-day tweets.
"The idea that somehow wrapping yourself in the cloak of Donald Trump is going to help you win in California, I'm trying to be diplomatic here, it's peculiar at best", said Mike Madrid, a Republican political consultant who opposes Trump and worked on Democrat Antonio Villaraigosa's campaign for governor. He has vowed to go even further by pursuing a state-run, single-payer system for all Californians.
But Trump's approval ratings among Republicans are near a historical high and remarkable for a president who has so often abandoned GOP orthodoxy on issues and created so much discomfort with his conduct and behaviour.
Democrats got good news during the Tuesday primaries, and they're getting good news again Thursday morning.
Alabama Gov. Kay Ivey, who stepped in past year when Robert Bentley resigned (becoming the state's first female governor), beat out Tommy Battle, state Sen.
California's Sen. Dianne Feinstein also fared well, fending off challenges from the left.
In Montana, the establishment-backed Matt Rosendale, the state auditor, won the Republican Senate nomination; he'll face a slightly uphill but by no means unwinnable race against Democratic incumbent Jon Tester.
Almost 500 San Luis Obispo County residents cast their votes in the California U.S. Senate primary race for a candidate who believes that the Holocaust was a hoax and that Adolf Hitler may have been "the second coming of Jesus Christ". The Democratic Congressional Campaign Committee (DCCC) has spent at least $5.6 million in the Golden State this election cycle, at one point even giving money to Republican candidates in the hopes of splitting the GOP vote. The favorite of Washington Democrats will take on GOP Assemblyman Jay Webber in one of several New Jersey races Democrats view as possible pickups.
Ryan warns Trump against pardoning himself
He demanded a Justice Department inquiry of the matter and dubbed the matter "SPYGATE" in repeated posts on Twitter. Trey Gowdy's assessment that there was no evidence to support the commander-in-chief's " SPYGATE " claims .
Vegas not rattled by doubters, but looking for Golden Misfits form
Then, a tripping penalty in the center of the ice on Colin Miller led to a power play goal and the ceiling caved in from there. With a league-leading 31 points, Kuznetsov is making a case to be the Conn Smythe Trophy victor as playoff MVP.
Amazon to show live Premier League football matches
In future less of your Premier League viewing habits will be satisfied through a standard Sky Sports television subscription. Amazon also bought exclusive rights to show the US Open tennis tournament in Britain, as well as the men's ATP World Tour.
She is to face Democratic former representative Bobby Bright in Alabama's conservative second district, where Trump loyalty has been a central issue. In New Mexico, former Democratic state party leader Deb Haaland won her congressional Democratic primary, putting her on track to become the first Native American congresswoman in US history.
In the race for governor, Cox's second-place finish was a victory for a state GOP that has been shrinking in numbers and influence.
Senator Roger Wicker, Republican of MS, won his primary contest as did Senator Bob Menendez, Democrat of New Jersey.
In the state's 3rd District, incumbent Republican Rep.
In two of the three Southern California districts, Democrats were coming in second place behind Republicans, but the races were too close to call early Wednesday, leaving Democrats at risk of being locked out.
Menendez's opponent in November will be Republican businessman Bob Hugin, who won 75 percent in his primary.
It's that theory - coupled with improvements on the congressional generic ballot - that has led to a surge of optimism among Republicans about their chances of retaining their House and Senate majorities this fall. In the two with retiring members, the Democrats are favored.
Republican Rep. Mimi Walters easily advanced to the November election in her Orange County district that has been targeted by Democrats. He will face Baron Bruno, a real estate agent without a declared political party, in the general election.
A key Senate race took shape in the heart of Trump country as well. His policy platform as stated on his website shadows Trump's politics: "We should begin by repealing Jerry Brown's massive $52 billion gas tax increase and ending the the [sic] Sanctuary State'".
"A little story that no one's talking about right now is a state senator, a Democrat just got recalled".