I'm not so sure its setting up the battle lines between the Right/Left to occupy the peons. It may be the actual policies.
Here are the dem policies, most of them give tax dollars away, the assumption is that they can tax the 1% for all the money they need, or that the Debt doesn't matter.
1. Open borders, tear down the southern border fence/wall
2. Sanctuary cities & states
3. Free college
4. Single Payer Healthcare, aka rationed healthcare, "Medicare for all"
5. Eliminate ICE and DHS, turn the US into the EU, with muslim "no go zones"
6. Promote Globalism, whatever Wall Street wants Wall Street gets, see K-Street Cash
7. Paris Climate Change Treaty where the US pays $trillions to poor countries
8. Stupid trade agreements, e.g tax breaks to move factories overseas
9. Let China run roughshod over the US for trade and intellectual property
10. Let NK develop nukes and ICBM delivery systems, have no one capable of dealing with NK
11. Raise taxes to 70% on the wealthy, especially on corporations so they relocate overseas
12. Opioid problem running rampant across the US
13. Gangs like MS-13 running rampant across the US
14. No steel or mining industries due to foreign "dumping" of subsidized products
15. No new pipelines
16. No offshore drilling
17. The dems' "Central Committee" appoints super-delegates to subvert real voters in primaries
18. Pack the US Supreme Court to promote liberal policies
19. Impeach anyone they deem not liberal enough, like Kavanaugh
20. Use the Federal Government to punish conservatives, like the IRS and Lois Lerner hounded conservatives
21. Use the Intel community to spy on the opposition party, like Hillary, FusionGPS, and the FBI/DOJ spied on Trump
22. Block voter ID laws to ensure fraud, and promote "vote harvesting" to steal elections
23. Refuse to provide funding for border walls/security, which DHS says is desperately needed.
24. Give $Trillions to Mexico and Central America for a Marshal Plan, but not help US citizens living in tent cities
25. Impose gun control, outlaw private gun sales, outlaw AR style rifles, restrict sales of bullets, etc.
26. "Green New Deal" Impose a "carbon tax" to punish anyone who works, heats their home, flies, or has a car
27. Anti-business democrat socialists caused Amazon to flee NYC taking 25,000 good paying jobs to VA
28. REPARATIONS to blacks to pay for slavery, $trillions owed by US voters
29. Excuse the murder of unwanted newborns, i.e. "infanticide"
30. Change the Electoral College to popular vote
31. All prisoners get to vote, even the Boston Marathon Bomber, so says Bernie
32. LGBTQ rights, trannys in military
33. Hunt down suspected white supremacists, increase domestic surveillance
34. Add Senators and congressmen for DC and Puerto Rico