NEW YORK — Donald Trump tried to illegally influence the 2016 presidential election by preventing damaging stories about his personal life from becoming public, a prosecutor told jurors Monday at the start of the former president’s historic hush money trial.

“This was a planned, long-running conspiracy to influence the 2016 election, to help Donald Trump get elected through illegal expenditures to silence people who had something bad to say about his behavior,” prosecutor Matthew Colangelo said. “It was election fraud, pure and simple.”

A defense lawyer countered by assailing the case as baseless and attacking the integrity of the onetime Trump confidant who’s now the government’s star witness.

“President Trump is innocent. President Trump did not commit any crimes. The Manhattan district attorney’s office should never have brought this case,” attorney Todd Blanche said.

The opening statements offered the 12-person jury — and the voting public — radically divergent roadmaps for a case that will unfold against the backdrop of a closely contested White House race in which Trump is not only the presumptive Republican nominee but also a criminal defendant facing the prospect of a felony conviction and prison.

It is the first criminal trial of a former American president and the first of four prosecutions of Trump to reach a jury. Befitting that history, prosecutors sought from the outset to elevate the gravity of the case, which they said was chiefly about election interference as reflected by the hush money payments to a porn actor who said she had a sexual encounter with Trump.

“The defendant, Donald Trump, orchestrated a criminal scheme to corrupt the 2016 presidential election. Then he covered up that criminal conspiracy by lying in his New York business records over and over and over again,” Colangelo said.

The trial, which could last up to two months, will require Trump to spend his days in a courtroom rather than on the campaign trail, a reality he complained about Monday when he lamented to reporters after leaving the courtroom: “I’m the leading candidate … and this is what they’re trying to take me off the trail for. Checks being paid to a lawyer.”

Trump has nonetheless sought to turn his criminal defendant status into an asset for his campaign, fundraising off his legal jeopardy and repeatedly railing against a justice system that he has for years claimed is weaponized against him. In the weeks ahead, the case will test the jury’s ability to judge him impartially but also Trump’s ability to comply with courtroom protocol, including a gag order barring him from attacking witnesses, jurors, trial prosecutors and some others.

Trump faces 34 felony counts of falsifying business records — a charge punishable by up to four years in prison — though it’s not clear if the judge would seek to put him behind bars. A conviction would not preclude Trump from becoming president again, but because it is a state case, he would not be able to pardon himself if found guilty. He has repeatedly denied any wrongdoing.

The case brought by Manhattan District Attorney Alvin Bragg revisits a years-old chapter from Trump’s biography when his celebrity past collided with his political ambitions and, prosecutors say, he scrambled to stifle stories that he feared could torpedo his campaign.

The opening statements served as an introduction to the colorful cast of characters that feature prominently in that tawdry saga, including Stormy Daniels, the porn actor who says she received the hush money; Michael Cohen, the lawyer who prosecutors say paid her; and David Pecker, the tabloid publisher who agreed to function as the campaign’s “eyes and ears” and who served as the prosecution’s first witness on Monday.

Pecker is due back on the stand Tuesday, when the court will also hear arguments on whether Trump violated Judge Juan Merchan’s gag order with a series of Truth Social posts about witnesses over the last week.

In his opening statement, Colangelo outlined a comprehensive effort by Trump his allies to prevent three separate stories — two from women alleging prior sexual encounters — from surfacing during the 2016 presidential campaign. That undertaking was especially urgent following the emergence late in the race of a 2005 “Access Hollywood” recording in which Trump could be heard boasting about grabbing women sexually without their permission.

Colangelo recited Trump’s now-infamous remarks as Trump looked on, stone-faced.

“The impact of that tape on the campaign was immediate and explosive,” Colangelo said.