Ex-House Speaker Nancy Pelosi will not run for a 20th term in office. REUTERS

Rep. Nancy Pelosi’s exit from politics after nearly 40 years in the game is a stark reminder that too much of our political class is like her: Long-haul careerists who cling to the reins of power — while making bank off their positions.

On Thursday, the ex-speaker announced she won’t seek a 20th term; she thus avoids a potentially tough primary battle against former AOC Chief of Staff Saikat Chakrabarti.

She wasn’t eager to go: Until now, she’d been pointedly prepping for another run at age 85 , defying younger members of her party (including, reportedly, House Minority Leader Rep. Hakeem Jeffries, 55) who wanted her to let someone born after World War II take over.

This reluctance to let a new gener

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