In most elections, the majority of votes are cast "down the ticket" - meaning, a voter supports both party's presidential nominee and state Congressional candidates. In fact, according to Pew Research, "overwhelming shares of voters who are supporting Trump and Biden say they are also supporting the same-party candidate for Senate."
Typically, this means that that the number of votes for a presidential candidate and that party's Senate candidates are relatively close.
Twitter user "US Rebel" (@USRebellion1776), however, found that the number of votes cast for Joe Biden far exceeds those cast for that state's Senate candidates in swing states, while those cast for Trump and GOP Senators remains far closer.
In Michigan, for example, there was a difference of just 7,131 votes between Trump and GOP candidate John James, yet the difference between Joe Biden and Democratic candidate Gary Peters was a staggering 69,093.
In Georgia, there was an 818 vote difference between Trump and the GOP Senator, vs. a 95,000 difference between Biden and the Democratic candidate for Senator.
In Georgia, it's even worse.— US Rebel (@USRebellion1776) November 5, 2020
Where they're currently "finding" new Biden votes.
GOP Sen: 2,433,617
Dem Sen: 2,318,850
Again, after accounting for 3rd party vote, HUGE amount of mysterious Biden votes w/ no down ticket. pic.twitter.com/iRtTM2IaeG
Yet, in two non-swing states, there was "no massive flood of mysterious empty Biden votes," leading US Rebel to suggest "It's fraud."