find out who's up and who's down in the latest US presidential election opinion polls on the 21st of July Joe Biden dropped out of the presidential race and endorsed kamla Harris as the election enters its final weeks Guardian us is averaging National and state polls to see how the two candidates are fairing latest analysis after 2 weeks of a roughly three-point kamla Harris lead Guardian us polling averages have Donald Trump and Harris tied for the first time since we started tracking the poll in August many of the high Harris enthusiasm polls from late August are dropping off of our 10day rolling average while several new high quality polls have Trump in a narrow lead though the results are within the margins of error for the polls Trump's lead in those individual polls has led to a big increase in his national average the first presidential debate between Harris and Trump is Tuesday night our tracker uses polls gathered by 538 and filters out lower quality pollsters for National polls our State polling averages use a lower quality threshold for inclusion due to the small numbers of State polls polling averages capture how the race stands at a particular moment in time and are likely to change as the election gets closer averages from states with small numbers of polls are also more susceptible to errors and biases our averages are an estimate of the support that the candidates have in key swing States and on the national stage read our polling analysis from the 7th of September the 4th of September setember and the 30th of August