Ohio says no

First: Voters in Ohio reject a measure that would have made it easier for Republicans trying to make it harder for women to get an abortion. 

Plus: Do Republicans solemnly swear to support whoever is the nominee? We explore the "loyalty pledge" required in order to make the first debate stage. 

And: In a new interview, Joe Biden defends his climate credentials but dances around a big, unfulfilled promise. 

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