It’s debate week! (and 4 other big 2020 stories)

(CNN)With148 daysuntil the Iowa caucuses anda barely winnowed Democratic field still vying for the nomination, the 2020 election is already in full swing.Every Sunday, I round up the five BIG storylines you need to know to understand the upcoming week on the campaign trail. And they’re ranked — so the No. 1 story is the most important of the coming week. That means that there will be at least 11 candidates — and two nights of debates — for the fourth debate in October. (All 10 candidates who made it into the third debate also qualify for the fourth.) Who else might get in? Hawaii Rep. Tulsi Gabbard is now the closest, having met the fundraising threshold (130,000 unique donors) …