The Libertarian Party has urged Rep. Justin Amash to consider mounting a third-party challenge to President Donald Trump in the 2020 presidential election.

The Michigan Republican told his hometown paper that while he would not “rule out” a bid, he has not completely “thought through” his plans.

“There’s a lot of people who consider Amash to be the best congressman from the perspective of a Libertarian,” Libertarian Party Chairman Nicholas Sarwark told MLive. “They think he’s the best congressman for our goals since Ron Paul.”

When asked about the possibility of a presidential run over the last several weeks, Amash has repeated his desire to see a candidate challenge the dominance of Democrats and Republicans in politics, which he has described as a “two-party duopoly.”

And when asked in January at a Libertarian convention to describe the ideal third-party presidential candidate, Amash referred to himself.