Sen. Kamala Harris (D-Calif.) has surged into a tie with Sen. Bernie Sanders (I-Vt.) as the betting favorite among potential Democratic candidates to win the 2020 presidential election.
Sanders was previously the lone front-runner, and Harris had been tied with former Vice President Joe Biden for second-best odds.
Harris told MSNBC in late June that she hasn't ruled out a presidential bid in 2020. The first-term senator has emerged as one of the most prominent voices among Democrats who oppose Trump’s policies and nominees.
Harris, Warren, Booker and Gillibrand are among those in the Senate who have attempted to distinguish themselves as potential 2020 candidates by speaking out against Trump on policy issues, in addition to opposing his Cabinet and Supreme Court nominees.
Oddschecker, a site that averages odds across different betting platforms, gives Harris the best odds to win the Democratic nomination, followed by Biden, who has emerged as the favored candidate among Democrats in a number of recent polls.
Some Senate officials have reservations about a Biden candidacy, and they point to the former vice president's age and his two failed presidential bids as reasons to doubt he would be successful.