With less than two weeks to go before the 2024 primary season kicks off, presidential candidates are scrambling to consolidate their support in key states. Both President Joe Biden and former President Donald Trump maintain strong leads in their respective races, while their challengers trail behind by double digits, indicating a 2020 rematch is likely, polls show. Here’s a look at how candidates are polling in Iowa, New Hampshire, South Carolina and Nevada — four states that hold primaries or caucuses in January or February. IowaTrump boasts a strong lead in Iowa, where he is averaging 50% su…