The governor's race in Florida not only says a lot about where the Democratic and Republican parties are today but could also tell us where they are headed in the future.
Republican Ron DeSantis is the Donald Trump of the 2018 Florida gubernatorial campaign. He was backed by Trump in the primary, and the endorsement helped him shoot up in the polls.
Democrat Andrew Gillum represents the ascendent wing of the Democratic Party. He's a young, black progressive in a party that is becoming more liberal, younger and more diverse. In other words, Gillum is a picture of what the Democratic presidential nominee might be like in 2020.
A win by Gillum over DeSantis would be a clear indicator that Democrats would be in a strong position in Florida headed into 2020 after Hillary Clinton lost the state to Trump in 2016.
The state hasn't elected a Democratic governor since 1994. Democrats have also struggled in presidential elections since that point. Yes, they won the state a few times. Florida, though, never voted more Democratic than the nation as a whole. That is, the state continued to have a red tint to it.
On the other hand, a DeSantis win would be a sign that the Republican and Trump brand are not as weak as perhaps some thought in the state. A DeSantis win would fit with polling that has Trump's approval rating in Florida running ahead of where it is nationally.
The intrigue in this race, though, doesn't just come because it is a Democrat versus a Republican in a key swing state.
It comes from how Gillum differs from Democrats who have run in the past. Normally, you wouldn't think that a diverse candidate who represents the left flank of the party is a strong general election candidate in a state like Florida.
If Gillum wins, he'd turn that conventional wisdom on its head.
Gillum sets a contrast with Republicans in a way that many electorally unsuccessful Democrats in Florida haven't.
Democrats have mostly tried to win Florida with more moderate candidates. They literally put up former a Republican in Charlie Crist to run for governor in 2014, for example.
Gillum clearly isn't in the more moderate camp with his calls for Medicare for all. A Gillum win would put a feather in the gap of progressives like Bernie Sanders heading into 2020 who think Democrats work best with a strong left message.
Gillum stands out in other ways versus most prior Democratic candidates for statewide office in Florida. Specifically, he's a black man who made an exclusive appeal to young voters.
That sort of sounds like Barack Obama who won the Sunshine State and the presidency twice.
Clinton, though, couldn't follow through on Obama's electoral success. While Clinton lost for any number of reasons in 2016, one big cause was the lower black turnout. Perhaps that was to be expected without Obama being on the ticket. Still, it was notable. Worrisome to Democrats since 2016 is that the low turnout of black voters has continued into the 2018 cycle.
A Gillum win with higher black turnout would suggest that Democrats can raise black turnout again in 2020 as long as they have the right candidate. It doesn't have to be a black candidate, either -- Doug Jones, a white man who served as the lead prosecutor in a case against two Ku Klux Klan members responsible for the 1963 bombing of a black church, upset Roy Moore in last year's Alabama Senate election thanks to high black turnout.
A Democratic candidate who says they can deliver black votes like Gillum would have a powerful message in a primary.
Clinton also struggled mightily among younger voters. Whether you look at the exit polls or voter files, Clinton's inability to match Obama's numbers among young voters was a pivotal cause of her defeat.
Like with African-Americans, a Gillum win on the backs of young voters could be a sign that they would vote in high numbers for the right candidate in a general election. That would be music to Sanders' ears for sure.
Of course, the election could backfire on Gillum and those have a similar message to him.
If DeSantis wins, expect those Democrats who are more centrist and traditional to point to Gillum as a warning sign of what can happen when you try to win over people in a swing state with a progressive message aimed specifically at minorities and young voters. Gillum detractors could argue that Democrats would have blown their best chance at winning the governorship in a generation.
In this way, Gillum is a big bet for progressive. If he wins, he'll be a model for them. If Gillum loses, he'll be used against progressives in 2020.