The USC Dornsife/Los Angeles Times “Daybreak” poll tracks about 3,000 eligible voters until election day, asking on a regular basis about their support for Hillary Clinton, Donald Trump or other candidates as well as their likelihood of actually casting a ballot.
We update the data each day based on the weighted average of poll responses over the previous week. That means results have less volatility than some other polls, but also means the poll lags somewhat in responding to major events in the campaign. More about the poll and why it differs from others.
We ask voters what the chance is that they will vote for Trump, Clinton or someone else, using a 0-100 scale. The overall level of support for each candidate reflects the weighted average of those responses.
See it all at the Los Angeles Times;