Before it was discussed how Beto and Bernie might compete for votes...even though they are seemingly dissimilar. Well the strategy of using the far left to defeat Beto is the new GOP strategy.
THE G.O.P.’S PLAN TO TAKE DOWN BETO: UNLEASH THE BERNIE BROS
https://www.vanityfair.com/news/2019/01/beto-orourke-vs-bernie-bros-progressives
Frankly, the best strategy to take down Trump is Minnesota's Tim Walz approach. In Minnesota's governor primary process, the outstate D moderate Walz was favored over more liberal Twin Cities candidates - even in the cities - because instinctively they knew he would be better at taking down the GOP. The plan worked like a charm...and Walz sailed to victory.
In the presidential election, we need to do the same by putting up a moderate candidate. That's why the GOP is trying to stop moderates like Beto and help Bernie. In fact, I wouldn't be surprised to see Russian trolls start to support Bernie and attack Beto.