Democrats battled over health care on Wednesday in the early moments of a presidential debate that tested the strength of Joe Biden’s candidacy.

In particular, the former vice president and one of his chief rivals, California Sen. Kamala Harris, fought over competing plans to provide universal coverage.

Biden charged that Harris’ plan would cost $3 trillion after she left office and would force middle-class taxes to go up, not down. He said that would put Democrats at a disadvantage against President Donald Trump.

“You can’t beat President Trump with double talk on this plan,” he said.

Harris slapped back that Biden was inaccurate.

“The cost of doing nothing is far too expensive,” Harris said. She added: “Your plan does not cover everyone in America.”

From left, Sen. Michael Bennet, D-Colo., Sen. Kirsten Gillibrand, D-N.Y., former HUD Secretary Julian Castro, Sen. Cory Booker, D-N.J., and former Vice President Joe Biden are introduced before the second of two Democratic presidential primary debates hosted by CNN Wednesday, July 31, 2019, in the Fox Theatre in Detroit. (AP Photo/Carlos Osorio)
From left, Sen. Michael Bennet, D-Colo., Sen. Kirsten Gillibrand, D-N.Y., former HUD Secretary Julian Castro, Sen. Cory Booker, D-N.J., and former Vice President Joe Biden are introduced before the second of two Democratic presidential primary debates hosted by CNN Wednesday, July 31, 2019, in the Fox Theatre in Detroit. (AP Photo/Carlos Osorio)

The tense exchanges came early on the second night of Democratic debates that pitted the 76-year-old Biden against a younger slate of more diverse candidates. There were no candidates of color onstage in the first wave Tuesday night. On Wednesday night, there were four.

Biden was flanked by Harris on one side and New Jersey Sen. Cory Booker on the other. As he greeted Harris onstage moments before the opening statements, Biden quipped, “Go easy on me, kid.”

Biden expects to face pointed questions about race in particular, having stumbled in the opening debate in June when confronted by Harris over his record on school integration. Booker in recent days has seized on Biden’s decades-old support for criminal justice laws that disproportionately hurt minorities.

Former Vice President Joe Biden is introduced before the second of two Democratic presidential primary debates hosted by CNN Wednesday, July 31, 2019, in the Fox Theatre in Detroit. (AP Photo/Paul Sancya)
Former Vice President Joe Biden is introduced before the second of two Democratic presidential primary debates hosted by CNN Wednesday, July 31, 2019, in the Fox Theatre in Detroit. (AP Photo/Paul Sancya)

Biden’s team said that he hopes to focus his attacks on Trump but that he’s ready to fight back more aggressively against Harris and Booker if provoked.

Wednesday’s debate comes 24 hours after another set of 10 Democrats debated, fiercely at times, over the direction of their party.

In that encounter, Bernie Sanders and Elizabeth Warren faced intense criticism from lesser-known moderates who warned primary voters that a sharp shift to the left on health care and other key policies would make it all but impossible to defeat Trump.

That same dynamic will be on display Wednesday night — only in reverse.

Biden, who leads virtually all early polls, is considered the premier moderate on stage. In addition to Harris and Booker, his more progressive opponents include New York Mayor Bill de Blasio, former Obama administration housing chief Julián Castro, Hawaii Rep. Tulsi Gabbard, New York Sen. Kirsten Gillibrand, Washington Gov. Jay Inslee and entrepreneur Andrew Yang.

While the first primary votes won’t come for six more months, there is a sense of urgency for the lower-tier candidates to break out. More than half the field could be blocked from the next round of debates altogether — and possibly pushed out of the race — if they fail to reach new polling and fundraising thresholds implemented by the Democratic National Committee.

The dire stakes have forced many Democrats to turn away from Trump and turn against one another in recent weeks.

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