Primaries in Nevada are the biggest Senate and gubernatorial battles set for next Tuesday, with the Silver State playing a critical role in this year’s midterm elections. Both races are among the top pickup opportunities for Republicans, who hope they will be able to get their strongest candidates through the primaries.

The Maine race for governor is already set, with neither Democratic Gov. Janet Mills or former Republican Gov. Paul LePage facing a primary. With two governors battling each other, this is another key race to watch in a state where voters always have an unpredictable, independent streak.

And in South Carolina and North Dakota, incumbent senators should cruse to re-nomination, but a primary fight for governor in the Palmetto State has devolved into bitter Twitter spats in recent days.

Here are updates and recaps of the key primaries we’re watching and links to our most recent coverage.

Nevada Senate

If there’s a primary upset next Tuesday, it could be in the GOP race to take on the most vulnerable Democratic

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