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Google: Biden, Buttigieg most-searched potential 2020 Dem contenders

Former Vice President Joe BidenJoe BidenBiden team wants to understand Trump effort to 'hollow out government agencies' Overnight Defense: Trump transgender ban 'inflicts concrete harms,' study says | China objects to US admiral's Taiwan visit Protect our world: How the Biden administration can save lives and economies worldwide MORE and South Bend, Ind., Mayor Pete ButtigiegPete Buttigieg'Biff is president': Michael J. Fox says Trump has played on 'every worst instinct in mankind' Buttigieg: Denying Biden intelligence briefings is about protecting Trump's 'ego' Biden's win is not a policy mandate — he should govern accordingly MORE are the most-searched potential 2020 Democratic candidates, according to data released by Google.

Sen. Bernie SandersBernie SandersFive House Democrats who could join Biden Cabinet Biden names John Kerry as 'climate czar' in new administration In the final chapter of 2020, we must recommit to repairing our democracy MORE (I-Vt.) comes in third, according to Google, followed by former Rep. Beto O’Rourke (D-Texas) and Sen. Kamala HarrisKamala HarrisFive House Democrats who could join Biden Cabinet GOP senator: No indication of widespread voting irregularities, window for Trump challenges is 'closing' Biden pledges to work with mayors MORE (D-Calif.).

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Breaking down the search interest, Biden saw a 100 percent increase in the past week, while Buttigieg saw a spike of 35 percent and Sanders saw an increase of 18 percent.

Biden is widely expected to announce a 2020 presidential run, joining a field of more than a dozen Democratic candidates.

Several candidates saw interest spike concurrent with their campaign announcements, including Harris, who saw her peak around Jan. 21, when she made her announcement, and Sanders, who saw a similar peak when he announced on Feb. 19.