President Trump is putting money in the mail, and promising more, as the midterm elections near. At a rally in Vandalia, Ohio, he repeated his pledge to send every adult U.S. citizen a $5,000 "Trump Dividend" if Republicans hold both the House and Senate on Nov. 3, Yahoo Finance and CNBC reported. "Only I can make you this promise," he said.

That $5,000 payment does not exist yet. Congress has not approved it or found a way to pay for it.

Two smaller payments are real. The first is a one-time $90 rebate for people in Original Medicare Part B. Most will get a direct deposit on or around Oct. 8, with paper checks later in the month, according to a fact sheet from the Centers for Medicare & Medicaid Services. NBC News reported more than 20 million seniors could qualify. People in Medicare Advantage, those who get Medicaid help with premiums, and higher earners who pay an extra premium charge are left out.

The second is a $500 refund to about 950,000 people who buy their own Affordable Care Act coverage without federal subsidies, CNN and CNBC reported. Those checks started going out last week in 30 states that use the federal marketplace.

Time magazine noted the timing: the checks arrive weeks before voters choose who controls Congress. Trump has pitched the payments as proof his policies put money back in people's pockets.

For context, the Nov. 3 vote comes as polls show Democrats ahead on the generic congressional ballot by about 7 to 9 points. Prices and health costs are top concerns. Trump also warned in Ohio that he may not help states as much if Democrats win, CNBC reported.

If you are on Medicare and unsure about the rebate, CMS says to call 1-800-MEDICARE. For payment status, Social Security takes calls at 1-800-772-1213 starting Oct. 15.

What we know: The $90 and $500 payments are going out this month.
What we don't: Whether Congress would ever fund a $5,000 check.