https://leger360.com/wp-content/uploads/2021/01/Legers-North-American-Tracker-January-18th-2021-min.pdfJanuary 15-17
1007 adults (MoE: 3.09%), 372 Trump voters (no Republican category, unfortunately)
You can compare the results with Nov 13-15 for all adults but the last poll didn't list Trump voters, just Republicans, so the trendlines arguably aren't relevant here.
Among those Trump voters:
With TrumpTrump 58
Pence 17
Cruz 7
Haley 4
Romney 3
DeSantis 2
Rubio 2
Tim Scott 2
Pompeo 1
Ivanka Trump 1
Trump Jr. 1
Hawley 0
Hogan 0
Sasse 0
Rick Scott 0
Without TrumpPence 32
Trump Jr. 22
Cruz 13
Haley 7
DeSantis 5
Ivanka Trump 5
Romney 4
Rubio 3
Hawley 2
Pompeo 2
Tim Scott 2
Hogan 1
Sasse 0
Rick Scott 0
I'm a bit surprised to see Pence still ahead given that he's now a persona non grata in large parts of Trumpworld and I'm skeptical this will hold, but perhaps he will be the Biden of the 2024 Republican primaries.