President Obama wondered to supporters if this election could be “the end” of his political career.

“It’s August 23rd,” Obama wrote in a fundraising email with “the end?” as its subject line. “And 75 days from now, I’ll either be looking at another four years in the White House — or the end of this opportunity.”

He asked for contributions of $5 or more, saying “we’re getting outspent by wide margins in critical battleground states — and what we do about that today could be the difference between winning and losing on November 6th.”

This is the third fundraising message this week from President Obama or First Lady Michelle Obama, if you count the message from him that she forwarded along with her message.

“What I will not abide is getting outspent by a margin that negates all the hard work our volunteers are doing — talking to voters, knocking on doors, making calls,” President Obama said in that forwarded appeal.