Bernie Sanders and Donald Trump are roiling the Washington establishment in the 2016 presidential race, but their respective paths to their party’s nominations are filled with obstacles.

While the Vermont senator and real estate mogul have defied all pundit predictions, there are power brokers on both sides of aisle who will play major roles in deciding who will advance to the general election.

Some are fans of the grassroots movements that have catapulted Trump and Sanders; some are not.The following is a list of major power players who could alter the 2016 election.

Read More: The power brokers who could decide the 2016 election | TheHill