While nearly all likely Democratic primary voters are still trying to make up their minds in the 2020 New Hampshire Presidential Primary, Bernie Sanders, Joe Biden, and Elizabeth Warren are the early frontrunners. More than three-quarters of Republicans are still trying to decide whom to support, and just under half say they currently plan on voting for Donald Trump, considerably lower than the proportion of Democrats who planned on voting for Barack Obama in October 2009. Interest in the 2020 primary is quite high and greater than at this point in the last two electoral cycles.
UNH Survey Center
Survey Center, UNH, "Sanders, Biden & Warren Early Democratic Frontrunners; Trump Not Consensus Choice in GOP Primary 10/18/17" (2017). All UNH Survey Center Polls. 28.