(WLUK) -- There are red states, blue states and then there are swing states, like Wisconsin.
A quick look at the 2016 presidential election map shows Wisconsin went red when voters were asked to choose between Democrat Hillary Clinton and Republican Donald Trump.
Four years before , Wisconsin was blue. Voters chose Democrat Barack Obama over Republican Mitt Romney.
Looking ahead to 2020 , Wisconsin could be red or blue. Especially when you look at the most recent state level elections.
"We've seen lots of close elections. With the attorney general, with the governor. With the... now the state supreme court," said David Helpap.
He's a political science professor at UW-Green Bay and says he sees certain parts of the state moving in a conservative direction while other parts are more liberal.
"You do see a geographic distribution of voters in Wisconsin right now where the larger, more urban areas, are becoming very democratic. Whereas, the outlying rural areas are becoming very Republican."
Looking ahead to the 2020 election, it's clear some democratic presidential candidates have their eyes locked on Wisconsin.
Beto O'Rourke has already made two stops in the state. Presidential hopeful Bernie Sanders also plans to be in Madison on Friday.
While President Donald Trump hasn't made any campaign stops in Wisconsin this year, he held a rally in Mosinee last fall. Based on past stops, chances are the president will campaign in Wisconsin.
A new Marquette Law School poll asked 800 registered Wisconsin voters questions. The poll was conducted from April 3 to 7. The margin of error is +/- 4%.
The poll shows 28% say that they would definitely vote to reelect Trump, and 14% would probably vote to reelect him.
Another 8% say they would probably vote for someone else, and 46% would definitely vote for someone else.
According to the January poll, 27% said they would definitely vote to reelect Trump, 12% said that they would probably vote for him, 8% that they would probably vote for someone else and 49% that would definitely vote for someone else.