Building broad based coalitions is what Hillary did consistently throughout her time in the Senate and at State. She was able to gain Republican co-sponsors, while having more Democratic co-sponsors and passed legislation in her 8 years in the Senate than Bernie has in his 16 years!
In the Senate 57 of her Republican colleagues co-sponsored at least one piece of legislation she introduced! That means 84% of Republicans worked with her on bipartisan legislation SPEARHEADED by her. In comparison, 0% of Bernie Sander’s bills that have had Republican co-sponsors.
If you think 0% bipartisan support is better than 84%, I would check who you call naive.
Go look for yourself: https://www.govtrack.us/