Labor might actually benefit from this. The Teamsters have long been willing to work with both parties and good track record of getting higher wages for their members. Unions can still be effective but the AFL-CIO has been using World War II era tactics. Labor would have been better off spending more on organizing efforts and less on political campaigns. And unions like the AFL-CIO have let workers down on issues like immigration.
Now there's an understatement.
Big Labor's political contributions have bought them nothing for the last decade. They've given everything to Democrats, and Democrats have lost it all...losing the House, the Senate, the Presidency, most state governorships, most state legislatures, and even losing most registered voters.
Democrats and Big Labor are 0 for 6 in the political areas that count.