Independents made up about a third of the electorate nationwide in 2016, according to exit polls. Mr. Trump won these voters 48 percent to 42 percent. No doubt there were more than a few independents among the 78,000 voters across Wisconsin, Michigan and Pennsylvania who secured the Electoral College for the Republican nominee. But he hasn’t held onto them.
Independents have not been happy with Mr. Trump. Only 36 percent approved of the job he was doing during his first week in office, according to YouGov. The number was the same in late October this year. But significantly, over the same period, disapproval has spiked to 45 percent from 28 percent.
The picture is similar at the state level. The exit poll showed Mr. Trump winning independents in Wisconsin by 10 points in 2016. In a recent survey by Marquette University Law School, these voters preferred Joe Biden to Mr. Trump by a nine-point margin.
Mr. Trump won a 48 percent of independents in Pennsylvania in 2016. But in an August 2019 survey by Franklin & Marshall College, just 27 percent of the state’s independents approved of the president. And in Michigan, where Mr. Trump won independents by 52 to 36 percent, half now support the impeachment inquiry.
https://www.nytimes.com/2019/11/03/opinion/trump-presidential-election.html
Pulled it from an op-ed so I'm not 100% sure that the polling numbers are 100% accurate.
Edited by Da_Haze at 10:10:36 on 11/05/19