YES, TRUMP CAN WIN: So argues Sean Trende at RCP:

Throughout this primary season, I’ve had an ongoing fight with a co-worker about whether Donald Trump could win the general election.  I was pretty firmly in the “if the economy collapses, maybe, but he is much more likely to drag the entire Republican field down with him” camp.

To resolve this, my co-worker invited me to set up some benchmarks: what we would have to see in order to believe that Trump really could win the election – not just that he had some sort of outside shot in a perfect storm, but that he had a legitimate, realistic chance of winning.

To cover my bases, I tried to set benchmarks that I thought would be really difficult for Trump to meet: He would have to pull within five points of Hillary Clinton in the RCP Average within a month of wrapping up the GOP race (this was back when he was down by 10), and then he would have to prove that he could lead her in a polling average (rather than in the occasional outlying poll) by the end of the Republican convention.

So, here we are. Last week, Trump was up by 0.2 percent in the RCP Average, meeting both of my goalposts two months ahead of schedule.  I still believe that he is the underdog, but I have to concede that he can win. I would put his chances more around 30 percent today.  If at some point he establishes a durable lead (he returned to trailing Clinton Friday morning), or if he can push his average up into the high forties, I will revise things accordingly.

Why might this continue?  Here are a five reasons . . . .

Read the whole thing.

RELATED: National Poll shows Trump nearly even with Clinton, 47 to 45 percent among registered voters.