From Jonathan Bernstein at Bloomberg View:
If Indiana Governor Mike Pence is in fact Donald Trump’s choice for a running mate, then he is not just a good choice. He’s about the best choice Trump fans could hope for — at least based on what we know about the Indiana governor so far.
The Republican Party remains divided, with many party actors, including high-profile politicians, rejecting the reality-star nominee. So divided, in fact, that it seemed possible that Trump might be stuck with a scandal-ridden, unpopular retread (such as Newt Gingrich or Chris Christie) or some obscure figure without any obvious presidential credentials. Instead, if it’s Pence, he winds up with someone who wouldn’t have been a surprising choice for Jeb Bush, Marco Rubio or Scott Walker, if one of them had been the Republican nominee.